diff --git a/game_scripts/common/log.lua b/game_scripts/common/log.lua
index 7910cb868..a266156ff 100644
--- a/game_scripts/common/log.lua
+++ b/game_scripts/common/log.lua
@@ -68,10 +68,10 @@ the message will actually be printed.
 ]]
 
 local log = {
-  INFO = 0,
-  WARN = -1,
-  ERROR = -2,
-  NEVER = -3,
+    INFO = 0,
+    WARN = -1,
+    ERROR = -2,
+    NEVER = -3,
 }
 
 local ESCAPE = string.char(27)
diff --git a/game_scripts/common/pickups.lua b/game_scripts/common/pickups.lua
index 74a604061..4ed508916 100644
--- a/game_scripts/common/pickups.lua
+++ b/game_scripts/common/pickups.lua
@@ -39,55 +39,55 @@ pickups.moveType = {
 }
 
 pickups.defaults = {
-  apple_reward = {
-      name = 'Apple',
-      classname = 'apple_reward',
-      model = 'models/apple.md3',
-      quantity = 1,
-      type = pickups.type.REWARD
-  },
-  lemon_reward = {
-      name = 'Lemon',
-      classname = 'lemon_reward',
-      model = 'models/lemon.md3',
-      quantity = -1,
-      type = pickups.type.REWARD
-  },
-  strawberry_reward = {
-      name = 'Strawberry',
-      classname = 'strawberry_reward',
-      model = 'models/strawberry.md3',
-      quantity = 2,
-      type = pickups.type.REWARD
-  },
-  fungi_reward = {
-      name = 'Fungi',
-      classname = 'fungi_reward',
-      model = 'models/toadstool.md3',
-      quantity = -10,
-      type = pickups.type.REWARD
-  },
-  watermelon_goal = {
-      name = 'Watermelon',
-      classname = 'watermelon_goal',
-      model = 'models/watermelon.md3',
-      quantity = 20,
-      type = pickups.type.GOAL
-  },
-  goal = {
-      name = 'Goal',
-      classname = 'goal',
-      model = 'models/goal_object_02.md3',
-      quantity = 10,
-      type = pickups.type.GOAL
-  },
-  mango_goal = {
-      name = 'Mango',
-      classname = 'mango_goal',
-      model = 'models/mango.md3',
-      quantity = 100,
-      type = pickups.type.GOAL
-  }
+    apple_reward = {
+        name = 'Apple',
+        classname = 'apple_reward',
+        model = 'models/apple.md3',
+        quantity = 1,
+        type = pickups.type.REWARD
+    },
+    lemon_reward = {
+        name = 'Lemon',
+        classname = 'lemon_reward',
+        model = 'models/lemon.md3',
+        quantity = -1,
+        type = pickups.type.REWARD
+    },
+    strawberry_reward = {
+        name = 'Strawberry',
+        classname = 'strawberry_reward',
+        model = 'models/strawberry.md3',
+        quantity = 2,
+        type = pickups.type.REWARD
+    },
+    fungi_reward = {
+        name = 'Fungi',
+        classname = 'fungi_reward',
+        model = 'models/toadstool.md3',
+        quantity = -10,
+        type = pickups.type.REWARD
+    },
+    watermelon_goal = {
+        name = 'Watermelon',
+        classname = 'watermelon_goal',
+        model = 'models/watermelon.md3',
+        quantity = 20,
+        type = pickups.type.GOAL
+    },
+    goal = {
+        name = 'Goal',
+        classname = 'goal',
+        model = 'models/goal_object_02.md3',
+        quantity = 10,
+        type = pickups.type.GOAL
+    },
+    mango_goal = {
+        name = 'Mango',
+        classname = 'mango_goal',
+        model = 'models/mango.md3',
+        quantity = 100,
+        type = pickups.type.GOAL
+    }
 }
 
 return pickups
diff --git a/game_scripts/common/property_helpers.lua b/game_scripts/common/property_helpers.lua
index 254f2c6e4..d4fc13916 100644
--- a/game_scripts/common/property_helpers.lua
+++ b/game_scripts/common/property_helpers.lua
@@ -267,10 +267,10 @@ local function removeProperty(properties, keyList)
 end
 
 return {
-  RESULT = RESULT,
-  addProperty = addProperty,
-  removeProperty = removeProperty,
-  writeProperty = writeProperty,
-  readProperty = readProperty,
-  headTailSplit = headTailSplit,
+    RESULT = RESULT,
+    addProperty = addProperty,
+    removeProperty = removeProperty,
+    writeProperty = writeProperty,
+    readProperty = readProperty,
+    headTailSplit = headTailSplit,
 }
diff --git a/game_scripts/decorators/debug_observations.lua b/game_scripts/decorators/debug_observations.lua
index c5d8997a0..3006836e1 100644
--- a/game_scripts/decorators/debug_observations.lua
+++ b/game_scripts/decorators/debug_observations.lua
@@ -168,10 +168,10 @@ local function playersHoldingFlag()
 end
 
 local FLAG_STATE = {
-  NONE = 0,
-  HOME = 1,
-  CARRIED = 2,
-  DROPPED = 3,
+    NONE = 0,
+    HOME = 1,
+    CARRIED = 2,
+    DROPPED = 3,
 }
 
 local function redFlag()
@@ -212,9 +212,9 @@ local function blueFlag()
 end
 
 local HOME_FLAG_STATE = {
-  NONE = 0,
-  HOME = 1,
-  AWAY = 2,
+    NONE = 0,
+    HOME = 1,
+    AWAY = 2,
 }
 
 local function redFlagHome()
diff --git a/game_scripts/decorators/property_decorator.lua b/game_scripts/decorators/property_decorator.lua
index ee7d5a67e..6627be2a3 100644
--- a/game_scripts/decorators/property_decorator.lua
+++ b/game_scripts/decorators/property_decorator.lua
@@ -165,12 +165,12 @@ local function decorate(api)
 end
 
 return {
-  RESULT = RESULT,
-  decorate = decorate,
-  addReadWrite = addReadWrite,
-  addReadOnly = addReadOnly,
-  addWriteOnly = addWriteOnly,
-  removeReadWrite = removeReadWrite,
-  removeReadOnly = removeReadOnly,
-  removeWriteOnly = removeWriteOnly,
+    RESULT = RESULT,
+    decorate = decorate,
+    addReadWrite = addReadWrite,
+    addReadOnly = addReadOnly,
+    addWriteOnly = addWriteOnly,
+    removeReadWrite = removeReadWrite,
+    removeReadOnly = removeReadOnly,
+    removeWriteOnly = removeWriteOnly,
 }
diff --git a/game_scripts/factories/language/fastmapping_factory.lua b/game_scripts/factories/language/fastmapping_factory.lua
index 1805f0973..5b47d0434 100644
--- a/game_scripts/factories/language/fastmapping_factory.lua
+++ b/game_scripts/factories/language/fastmapping_factory.lua
@@ -354,16 +354,16 @@ function fastmapping.createLevelApi(kwargs)
     kwargs, objectCount, distractorObjectCount)
 
   return factory.createLevelApi{
-    episodeLengthSeconds = kwargs.episodeLengthSeconds,
-    instructor = fastmapping.defaultInstructor,
-    levelMapSelector = selectors.createIdentity(fastMap),
-    objectContext = object_generator.createContext{
-        attributes = {
-            shape = kwargs.goalShapes,
-            pattern = {'solid'}
-        }
-    },
-    taskSelector = selectors.createIdentity(task),
+      episodeLengthSeconds = kwargs.episodeLengthSeconds,
+      instructor = fastmapping.defaultInstructor,
+      levelMapSelector = selectors.createIdentity(fastMap),
+      objectContext = object_generator.createContext{
+          attributes = {
+              shape = kwargs.goalShapes,
+              pattern = {'solid'}
+          }
+      },
+      taskSelector = selectors.createIdentity(task),
   }
 end
 
diff --git a/game_scripts/factories/psychlab/glass_pattern_detection_factory.lua b/game_scripts/factories/psychlab/glass_pattern_detection_factory.lua
index d08a60a10..99db69842 100644
--- a/game_scripts/factories/psychlab/glass_pattern_detection_factory.lua
+++ b/game_scripts/factories/psychlab/glass_pattern_detection_factory.lua
@@ -296,11 +296,11 @@ function factory.createLevelApi(kwargs)
   env.__index = env
 
   setmetatable(env, {
-    __call = function (cls, ...)
-      local self = setmetatable({}, cls)
-      self:_init(...)
-      return self
-    end
+      __call = function (cls, ...)
+        local self = setmetatable({}, cls)
+        self:_init(...)
+        return self
+      end
   })
 
   --[[ Function to define a one-dimensional adaptive staircase procedure
diff --git a/game_scripts/factories/psychlab/point_and_click.lua b/game_scripts/factories/psychlab/point_and_click.lua
index 94c7bba6a..3b9f0f0bd 100644
--- a/game_scripts/factories/psychlab/point_and_click.lua
+++ b/game_scripts/factories/psychlab/point_and_click.lua
@@ -279,9 +279,9 @@ end
 -- Calculate normalised co-ordinates with respect to the widget.
 local function _normaliseCoord(widget, mouseX, mouseY)
   return {
-    (mouseX - widget.bounds.xMin) / (widget.bounds.xMax - widget.bounds.xMin),
-    (mouseY - widget.bounds.yMin) / (widget.bounds.yMax - widget.bounds.yMin),
-    mouseX, mouseY
+      (mouseX - widget.bounds.xMin) / (widget.bounds.xMax - widget.bounds.xMin),
+      (mouseY - widget.bounds.yMin) / (widget.bounds.yMax - widget.bounds.yMin),
+      mouseX, mouseY
   }
 end
 
diff --git a/game_scripts/factories/psychlab/visual_search_factory.lua b/game_scripts/factories/psychlab/visual_search_factory.lua
index d17b5e841..34f527484 100644
--- a/game_scripts/factories/psychlab/visual_search_factory.lua
+++ b/game_scripts/factories/psychlab/visual_search_factory.lua
@@ -175,11 +175,11 @@ function factory.createLevelApi(kwargs)
   env.__index = env
 
   setmetatable(env, {
-    __call = function (cls, ...)
-      local self = setmetatable({}, cls)
-      self:_init(...)
-      return self
-    end
+      __call = function (cls, ...)
+        local self = setmetatable({}, cls)
+        self:_init(...)
+        return self
+      end
   })
 
   --[[ Function to define the adaptive staircase procedure (a 'class').
diff --git a/game_scripts/factories/rooms/keys_doors_puzzle_factory.lua b/game_scripts/factories/rooms/keys_doors_puzzle_factory.lua
index ccfd9bbb1..abd589308 100644
--- a/game_scripts/factories/rooms/keys_doors_puzzle_factory.lua
+++ b/game_scripts/factories/rooms/keys_doors_puzzle_factory.lua
@@ -37,20 +37,20 @@ local timeout = require 'decorators.timeout'
 local factory = {}
 
 local ITEMS = {
-  key = {
-      name = 'Key',
-      classname = 'key',
-      model = 'models/hr_key_lrg.md3',
-      quantity = 1,
-      type = pickups.type.REWARD,
-  },
-  goal = {
-      name = 'Goal',
-      classname = 'goal',
-      model = 'models/hr_ice_lolly_lrg.md3',
-      quantity = 50,
-      type = pickups.type.REWARD
-  },
+    key = {
+        name = 'Key',
+        classname = 'key',
+        model = 'models/hr_key_lrg.md3',
+        quantity = 1,
+        type = pickups.type.REWARD,
+    },
+    goal = {
+        name = 'Goal',
+        classname = 'goal',
+        model = 'models/hr_ice_lolly_lrg.md3',
+        quantity = 50,
+        type = pickups.type.REWARD
+    },
 }
 
 local POSSIBLE_COLORS = {
diff --git a/game_scripts/factories/skymaze_factory.lua b/game_scripts/factories/skymaze_factory.lua
index 6c5ed14fa..44ea8cb1d 100644
--- a/game_scripts/factories/skymaze_factory.lua
+++ b/game_scripts/factories/skymaze_factory.lua
@@ -127,10 +127,10 @@ function factory.createLevelApi(kwargs)
               c = ''
               for n = 1, kwargs.goalHeight do
                  c = c .. '\n\n' .. maker:makeEntity{
-                    i = i,
-                    j = j,
-                    height = height + (n - 1) * PICKUP_HEIGHT,
-                    classname = 'goal',
+                     i = i,
+                     j = j,
+                     height = height + (n - 1) * PICKUP_HEIGHT,
+                     classname = 'goal',
                  }
               end
               return c
diff --git a/game_scripts/language/texter.lua b/game_scripts/language/texter.lua
index f755998f8..ed29d2562 100644
--- a/game_scripts/language/texter.lua
+++ b/game_scripts/language/texter.lua
@@ -24,11 +24,11 @@ See also `format` method for a higher level interface.
 Example:
 
     data = {
-      count = 2,
-      pets = {
-        { name = {first = 'Ajax', last = 'The Cat' } },
-        { name = {first = 'Fido', last = 'The Dog' } }
-      }
+        count = 2,
+        pets = {
+            { name = {first = 'Ajax', last = 'The Cat' } },
+            { name = {first = 'Fido', last = 'The Dog' } }
+        }
     }
 
     assert(decode('count', data) == 2)
@@ -53,11 +53,11 @@ end
 Example:
 
     data = {
-      count = 2,
-      pets = {
-        { name = {first = 'Ajax', last = 'The Cat' } },
-        { name = {first = 'Fido', last = 'The Dog' } }
-      }
+        count = 2,
+        pets = {
+            { name = {first = 'Ajax', last = 'The Cat' } },
+            { name = {first = 'Fido', last = 'The Dog' } }
+        }
     }
 
     assert(format('[count] pets', data) == '2 pets')
diff --git a/game_scripts/levels/contributed/dmlab30/language_select_located_object.lua b/game_scripts/levels/contributed/dmlab30/language_select_located_object.lua
index 97957b511..9c01e93b9 100644
--- a/game_scripts/levels/contributed/dmlab30/language_select_located_object.lua
+++ b/game_scripts/levels/contributed/dmlab30/language_select_located_object.lua
@@ -188,8 +188,8 @@ local GOAL_REWARD = 10
 local COLORS = {'red', 'green', 'blue', 'cyan', 'magenta', 'yellow'}
 local objectContext = object_generator.createContext{
     attributes = {
-      color = COLORS,
-      pattern = {'solid'},
+        color = COLORS,
+        pattern = {'solid'},
     },
     attributeDefaults = {
         size = 'medium',
diff --git a/game_scripts/levels/contributed/psychlab/factories/change_detection_factory.lua b/game_scripts/levels/contributed/psychlab/factories/change_detection_factory.lua
index e8f8ca748..232418d16 100644
--- a/game_scripts/levels/contributed/psychlab/factories/change_detection_factory.lua
+++ b/game_scripts/levels/contributed/psychlab/factories/change_detection_factory.lua
@@ -248,13 +248,13 @@ function factory.createLevelApi(kwargs)
 
     -- setup the adaptive staircase procedure
     self.staircase = psychlab_staircase.createStaircase1D{
-      sequence = kwargs.setSizes,
-      correctRewardSequence = kwargs.correctRewardSequence,
-      fractionToPromote = kwargs.fractionToPromote,
-      fractionToDemote = kwargs.fractionToDemote,
-      probeProbability = kwargs.probeProbability,
-      fixedTestLength = kwargs.fixedTestLength,
-      initialDifficultyLevel = kwargs.initialDifficultyLevel,
+        sequence = kwargs.setSizes,
+        correctRewardSequence = kwargs.correctRewardSequence,
+        fractionToPromote = kwargs.fractionToPromote,
+        fractionToDemote = kwargs.fractionToDemote,
+        probeProbability = kwargs.probeProbability,
+        fixedTestLength = kwargs.fixedTestLength,
+        initialDifficultyLevel = kwargs.initialDifficultyLevel,
     }
 
     -- blockId groups together all rows written during the same episode
diff --git a/game_scripts/levels/contributed/psychlab/factories/landoltC_identification_factory.lua b/game_scripts/levels/contributed/psychlab/factories/landoltC_identification_factory.lua
index 66ea87dc6..16854b3fd 100644
--- a/game_scripts/levels/contributed/psychlab/factories/landoltC_identification_factory.lua
+++ b/game_scripts/levels/contributed/psychlab/factories/landoltC_identification_factory.lua
@@ -474,10 +474,10 @@ function factory.createLevelApi(kwargs)
   end
 
   return psychlab_factory.createLevelApi{
-    env = point_and_click,
-    envOpts = {environment = env, screenSize = SCREEN_SIZE,
-               maxStepsOffScreen = MAX_STEPS_OFF_SCREEN},
-    episodeLengthSeconds = 150
+      env = point_and_click,
+      envOpts = {environment = env, screenSize = SCREEN_SIZE,
+                 maxStepsOffScreen = MAX_STEPS_OFF_SCREEN},
+      episodeLengthSeconds = 150
   }
 end
 
diff --git a/game_scripts/levels/contributed/psychlab/factories/motion_discrimination_easy_factory.lua b/game_scripts/levels/contributed/psychlab/factories/motion_discrimination_easy_factory.lua
index 684a8225a..6d9dddc30 100644
--- a/game_scripts/levels/contributed/psychlab/factories/motion_discrimination_easy_factory.lua
+++ b/game_scripts/levels/contributed/psychlab/factories/motion_discrimination_easy_factory.lua
@@ -322,8 +322,8 @@ function factory.createLevelApi(kwargs)
 
   function env:transformToFrameCoords(coords)
     self._frameCoords:val({
-      math.floor((coords(1):val() / CANVAS_SIZE) * self._frameSize[1] + 0.5),
-      math.floor((coords(2):val() / CANVAS_SIZE) * self._frameSize[2] + 0.5)
+        math.floor((coords(1):val() / CANVAS_SIZE) * self._frameSize[1] + 0.5),
+        math.floor((coords(2):val() / CANVAS_SIZE) * self._frameSize[2] + 0.5)
     })
     return self._frameCoords
   end
@@ -442,10 +442,10 @@ function factory.createLevelApi(kwargs)
   end
 
   return psychlab_factory.createLevelApi{
-    env = point_and_click,
-    envOpts = {environment = env, screenSize = SCREEN_SIZE,
-               maxStepsOffScreen = MAX_STEPS_OFF_SCREEN},
-    episodeLengthSeconds = 150
+      env = point_and_click,
+      envOpts = {environment = env, screenSize = SCREEN_SIZE,
+                 maxStepsOffScreen = MAX_STEPS_OFF_SCREEN},
+      episodeLengthSeconds = 150
   }
 end
 
diff --git a/game_scripts/levels/contributed/psychlab/factories/motion_discrimination_factory.lua b/game_scripts/levels/contributed/psychlab/factories/motion_discrimination_factory.lua
index 39e62ae41..84c3f6ca3 100644
--- a/game_scripts/levels/contributed/psychlab/factories/motion_discrimination_factory.lua
+++ b/game_scripts/levels/contributed/psychlab/factories/motion_discrimination_factory.lua
@@ -362,8 +362,8 @@ function factory.createLevelApi(kwargs)
 
   function env:transformToFrameCoords(coords)
     self._frameCoords:val({
-      math.floor((coords(1):val() / CANVAS_SIZE) * self._frameSize[1] + 0.5),
-      math.floor((coords(2):val() / CANVAS_SIZE) * self._frameSize[2] + 0.5)
+        math.floor((coords(1):val() / CANVAS_SIZE) * self._frameSize[1] + 0.5),
+        math.floor((coords(2):val() / CANVAS_SIZE) * self._frameSize[2] + 0.5)
     })
     return self._frameCoords
   end
@@ -489,10 +489,10 @@ function factory.createLevelApi(kwargs)
   end
 
   return psychlab_factory.createLevelApi{
-    env = point_and_click,
-    envOpts = {environment = env, screenSize = SCREEN_SIZE,
-               maxStepsOffScreen = kwargs.maxStepsOffScreen},
-    episodeLengthSeconds = kwargs.episodeLengthSeconds
+      env = point_and_click,
+      envOpts = {environment = env, screenSize = SCREEN_SIZE,
+                 maxStepsOffScreen = kwargs.maxStepsOffScreen},
+      episodeLengthSeconds = kwargs.episodeLengthSeconds
   }
 end
 
diff --git a/game_scripts/levels/contributed/psychlab/factories/multiple_object_tracking_factory.lua b/game_scripts/levels/contributed/psychlab/factories/multiple_object_tracking_factory.lua
index ba96f7762..04570bd83 100644
--- a/game_scripts/levels/contributed/psychlab/factories/multiple_object_tracking_factory.lua
+++ b/game_scripts/levels/contributed/psychlab/factories/multiple_object_tracking_factory.lua
@@ -125,11 +125,11 @@ function factory.createLevelApi(kwargs)
   env.__index = env
 
   setmetatable(env, {
-    __call = function (cls, ...)
-      local self = setmetatable({}, cls)
-      self:_init(...)
-      return self
-    end
+      __call = function (cls, ...)
+        local self = setmetatable({}, cls)
+        self:_init(...)
+        return self
+      end
   })
 
   local MAX_INT = math.pow(2, 32) - 1
diff --git a/game_scripts/levels/contributed/psychlab/factories/odd_one_out_factory.lua b/game_scripts/levels/contributed/psychlab/factories/odd_one_out_factory.lua
index 1bde9e036..2040ca00f 100644
--- a/game_scripts/levels/contributed/psychlab/factories/odd_one_out_factory.lua
+++ b/game_scripts/levels/contributed/psychlab/factories/odd_one_out_factory.lua
@@ -155,11 +155,11 @@ function factory.createLevelApi(kwargs)
   env.__index = env
 
   setmetatable(env, {
-    __call = function (cls, ...)
-      local self = setmetatable({}, cls)
-      self:_init(...)
-      return self
-    end
+      __call = function (cls, ...)
+        local self = setmetatable({}, cls)
+        self:_init(...)
+        return self
+      end
   })
 
   -- 'init' gets called at the start of each episode.
@@ -253,9 +253,9 @@ function factory.createLevelApi(kwargs)
       self.currentTrial.reward = 0
       self:addArray()
       self.pac:addTimer{
-        name = 'trial_timeout',
-        timeout = TRIAL_TIMEOUT,
-        callback = function(...) return self:trialTimeoutCallback() end
+          name = 'trial_timeout',
+          timeout = TRIAL_TIMEOUT,
+          callback = function(...) return self:trialTimeoutCallback() end
       }
 
       self.currentTrial.trialId = self.trialId
@@ -422,12 +422,12 @@ function factory.createLevelApi(kwargs)
             callback = nil
           end
           self.pac:addWidget{
-            name = 'image_' .. i .. '_' .. j,
-            pos = pos,
-            size = size,
-            image = image,
-            imageLayer = BACK_LAYER,
-            mouseHoverCallback = callback,
+              name = 'image_' .. i .. '_' .. j,
+              pos = pos,
+              size = size,
+              image = image,
+              imageLayer = BACK_LAYER,
+              mouseHoverCallback = callback,
           }
         end
       end
@@ -483,19 +483,19 @@ function factory.createLevelApi(kwargs)
     end
     if leftSide then
       self.pac:addWidget{
-        name = 'respond_left',
-        pos = {0.0, 0.0},
-        size = {0.4, 1.0},
-        imageLayer = FRONT_LAYER,
-        mouseHoverCallback = callback,
+          name = 'respond_left',
+          pos = {0.0, 0.0},
+          size = {0.4, 1.0},
+          imageLayer = FRONT_LAYER,
+          mouseHoverCallback = callback,
       }
     else
       self.pac:addWidget{
-        name = 'respond_right',
-        pos = {0.6, 0.0},
-        size = {0.4, 1.0},
-        imageLayer = FRONT_LAYER,
-        mouseHoverCallback = callback,
+          name = 'respond_right',
+          pos = {0.6, 0.0},
+          size = {0.4, 1.0},
+          imageLayer = FRONT_LAYER,
+          mouseHoverCallback = callback,
       }
     end
   end
@@ -528,22 +528,22 @@ function factory.createLevelApi(kwargs)
       size = {0.05, 1.0}
     end
     self.pac:addWidget{
-      name = 'respond_left',
-      pos = leftPos,
-      size = size,
-      image = self.images.whiteButton,
-      imageLayer = FRONT_LAYER,
-      mouseHoverCallback = leftResponseCallback,
-      mouseHoverEndCallback = hoverEndLeft,
+        name = 'respond_left',
+        pos = leftPos,
+        size = size,
+        image = self.images.whiteButton,
+        imageLayer = FRONT_LAYER,
+        mouseHoverCallback = leftResponseCallback,
+        mouseHoverEndCallback = hoverEndLeft,
     }
     self.pac:addWidget{
-      name = 'respond_right',
-      pos = rightPos,
-      size = size,
-      image = self.images.whiteButton,
-      imageLayer = FRONT_LAYER,
-      mouseHoverCallback = rightResponseCallback,
-      mouseHoverEndCallback = hoverEndRight,
+        name = 'respond_right',
+        pos = rightPos,
+        size = size,
+        image = self.images.whiteButton,
+        imageLayer = FRONT_LAYER,
+        mouseHoverCallback = rightResponseCallback,
+        mouseHoverEndCallback = hoverEndRight,
     }
   end
 
diff --git a/game_scripts/levels/contributed/psychlab/factories/visual_search_factory.lua b/game_scripts/levels/contributed/psychlab/factories/visual_search_factory.lua
index 1be8489fc..e48d367f2 100644
--- a/game_scripts/levels/contributed/psychlab/factories/visual_search_factory.lua
+++ b/game_scripts/levels/contributed/psychlab/factories/visual_search_factory.lua
@@ -196,11 +196,11 @@ function factory.createLevelApi(kwargs)
   env.__index = env
 
   setmetatable(env, {
-    __call = function (cls, ...)
-      local self = setmetatable({}, cls)
-      self:_init(...)
-      return self
-    end
+      __call = function (cls, ...)
+        local self = setmetatable({}, cls)
+        self:_init(...)
+        return self
+      end
   })
 
   -- 'init' gets called at the start of each episode.
diff --git a/game_scripts/levels/contributed/psychlab/visuospatial_suite/factories/defaults.lua b/game_scripts/levels/contributed/psychlab/visuospatial_suite/factories/defaults.lua
index c1785d543..a41fbbdc5 100644
--- a/game_scripts/levels/contributed/psychlab/visuospatial_suite/factories/defaults.lua
+++ b/game_scripts/levels/contributed/psychlab/visuospatial_suite/factories/defaults.lua
@@ -20,39 +20,39 @@ visuospatial task suite.
 ]]
 
 local defaults = {
-  TIME_TO_FIXATE_CROSS = 1, -- In frames.
-  FAST_INTER_TRIAL_INTERVAL = 1, -- In frames.
-  TRIAL_TIMEOUT = 300, -- In frames.
-  EPISODE_LENGTH_SECONDS = 300,
-  MAX_STEPS_OFF_SCREEN = 300,  -- 5 seconds.
-  TRIALS_PER_EPISODE_CAP = 50,
-
-  BG_COLOR = {0, 0, 0},
-  FIXATION_COLOR = {255, 255, 255}, -- RGB white.
-  WHITE_BUTTON_COLOR = {255, 255, 255},
-  GREEN_BUTTON_COLOR = {100, 255, 100},
-  RED_BUTTON_COLOR = {255, 100, 100},
-  -- We verified that all pairs of these colors are distinguishable by humans.
-  COLORS = {
-     {240, 163, 255}, -- Amethyst
-     {194, 0, 136}, -- Mallow
-     {116, 10, 255}, -- Violet
-     {153, 63, 0}, -- Caramel
-     {255, 204, 153}, -- Honeydew
-     {148, 255, 181}, -- Jade
-     {157, 204, 0}, -- Lime
-     {255, 164, 5}, -- Orange
-     {94, 241, 242}, -- Sky
-     {255, 255, 0}, -- Yellow
-  },
-
-  SCREEN_SIZE = {width = 512, height = 512},
-  FIXATION_SIZE = 0.1,
-  BUTTON_SIZE = 0.1,
-
-  FIXATION_REWARD = 0,
-  CORRECT_REWARD = 1,
-  INCORRECT_REWARD = 0,
+    TIME_TO_FIXATE_CROSS = 1, -- In frames.
+    FAST_INTER_TRIAL_INTERVAL = 1, -- In frames.
+    TRIAL_TIMEOUT = 300, -- In frames.
+    EPISODE_LENGTH_SECONDS = 300,
+    MAX_STEPS_OFF_SCREEN = 300,  -- 5 seconds.
+    TRIALS_PER_EPISODE_CAP = 50,
+
+    BG_COLOR = {0, 0, 0},
+    FIXATION_COLOR = {255, 255, 255}, -- RGB white.
+    WHITE_BUTTON_COLOR = {255, 255, 255},
+    GREEN_BUTTON_COLOR = {100, 255, 100},
+    RED_BUTTON_COLOR = {255, 100, 100},
+    -- We verified that all pairs of these colors are distinguishable by humans.
+    COLORS = {
+        {240, 163, 255}, -- Amethyst
+        {194, 0, 136}, -- Mallow
+        {116, 10, 255}, -- Violet
+        {153, 63, 0}, -- Caramel
+        {255, 204, 153}, -- Honeydew
+        {148, 255, 181}, -- Jade
+        {157, 204, 0}, -- Lime
+        {255, 164, 5}, -- Orange
+        {94, 241, 242}, -- Sky
+        {255, 255, 0}, -- Yellow
+    },
+
+    SCREEN_SIZE = {width = 512, height = 512},
+    FIXATION_SIZE = 0.1,
+    BUTTON_SIZE = 0.1,
+
+    FIXATION_REWARD = 0,
+    CORRECT_REWARD = 1,
+    INCORRECT_REWARD = 0,
 }
 
 return defaults
diff --git a/game_scripts/levels/contributed/psychlab/visuospatial_suite/factories/guided_saccade_factory.lua b/game_scripts/levels/contributed/psychlab/visuospatial_suite/factories/guided_saccade_factory.lua
index 19c52e526..5eadb24fc 100644
--- a/game_scripts/levels/contributed/psychlab/visuospatial_suite/factories/guided_saccade_factory.lua
+++ b/game_scripts/levels/contributed/psychlab/visuospatial_suite/factories/guided_saccade_factory.lua
@@ -388,8 +388,8 @@ function factory.createLevelApi(kwargs)
     for i = 1, NUM_LOCATIONS do
       local radians = 2 * math.pi * i / NUM_LOCATIONS
       local pos = {
-        0.5 * (1 + kwargs.locationRadius * math.sin(radians)),
-        0.5 * (1 + kwargs.locationRadius * math.cos(radians))
+          0.5 * (1 + kwargs.locationRadius * math.sin(radians)),
+          0.5 * (1 + kwargs.locationRadius * math.cos(radians))
       }
       locations[i] = pos
       local guideName = 'guide_' .. tostring(i)
diff --git a/game_scripts/levels/contributed/psychlab/visuospatial_suite/factories/odd_one_out_factory.lua b/game_scripts/levels/contributed/psychlab/visuospatial_suite/factories/odd_one_out_factory.lua
index 61dea2ed0..4f5a694f8 100644
--- a/game_scripts/levels/contributed/psychlab/visuospatial_suite/factories/odd_one_out_factory.lua
+++ b/game_scripts/levels/contributed/psychlab/visuospatial_suite/factories/odd_one_out_factory.lua
@@ -115,11 +115,11 @@ function factory.createLevelApi(kwargs)
   env.__index = env
 
   setmetatable(env, {
-    __call = function (cls, ...)
-      local self = setmetatable({}, cls)
-      self:_init(...)
-      return self
-    end
+      __call = function (cls, ...)
+        local self = setmetatable({}, cls)
+        self:_init(...)
+        return self
+      end
   })
 
   -- 'init' gets called at the start of each episode.
@@ -200,9 +200,9 @@ function factory.createLevelApi(kwargs)
       self.currentTrial.reward = 0
       self:addArray()
       self.pac:addTimer{
-        name = 'trial_timeout',
-        timeout = defaults.TRIAL_TIMEOUT,
-        callback = function(...) return self:trialTimeoutCallback() end
+          name = 'trial_timeout',
+          timeout = defaults.TRIAL_TIMEOUT,
+          callback = function(...) return self:trialTimeoutCallback() end
       }
 
       self.currentTrial.trialId = self.trialId
@@ -369,12 +369,12 @@ function factory.createLevelApi(kwargs)
             callback = nil
           end
           self.pac:addWidget{
-            name = 'image_' .. i .. '_' .. j,
-            pos = pos,
-            size = size,
-            image = image,
-            imageLayer = BACK_LAYER,
-            mouseHoverCallback = callback,
+              name = 'image_' .. i .. '_' .. j,
+              pos = pos,
+              size = size,
+              image = image,
+              imageLayer = BACK_LAYER,
+              mouseHoverCallback = callback,
           }
         end
       end
@@ -430,19 +430,19 @@ function factory.createLevelApi(kwargs)
     end
     if leftSide then
       self.pac:addWidget{
-        name = 'respond_left',
-        pos = {0.0, 0.0},
-        size = {0.4, 1.0},
-        imageLayer = FRONT_LAYER,
-        mouseHoverCallback = callback,
+          name = 'respond_left',
+          pos = {0.0, 0.0},
+          size = {0.4, 1.0},
+          imageLayer = FRONT_LAYER,
+          mouseHoverCallback = callback,
       }
     else
       self.pac:addWidget{
-        name = 'respond_right',
-        pos = {0.6, 0.0},
-        size = {0.4, 1.0},
-        imageLayer = FRONT_LAYER,
-        mouseHoverCallback = callback,
+          name = 'respond_right',
+          pos = {0.6, 0.0},
+          size = {0.4, 1.0},
+          imageLayer = FRONT_LAYER,
+          mouseHoverCallback = callback,
       }
     end
   end
@@ -475,22 +475,22 @@ function factory.createLevelApi(kwargs)
       size = {0.05, 1.0}
     end
     self.pac:addWidget{
-      name = 'respond_left',
-      pos = leftPos,
-      size = size,
-      image = self.images.whiteButton,
-      imageLayer = FRONT_LAYER,
-      mouseHoverCallback = leftResponseCallback,
-      mouseHoverEndCallback = hoverEndLeft,
+        name = 'respond_left',
+        pos = leftPos,
+        size = size,
+        image = self.images.whiteButton,
+        imageLayer = FRONT_LAYER,
+        mouseHoverCallback = leftResponseCallback,
+        mouseHoverEndCallback = hoverEndLeft,
     }
     self.pac:addWidget{
-      name = 'respond_right',
-      pos = rightPos,
-      size = size,
-      image = self.images.whiteButton,
-      imageLayer = FRONT_LAYER,
-      mouseHoverCallback = rightResponseCallback,
-      mouseHoverEndCallback = hoverEndRight,
+        name = 'respond_right',
+        pos = rightPos,
+        size = size,
+        image = self.images.whiteButton,
+        imageLayer = FRONT_LAYER,
+        mouseHoverCallback = rightResponseCallback,
+        mouseHoverEndCallback = hoverEndRight,
     }
   end
 
diff --git a/game_scripts/levels/contributed/psychlab/visuospatial_suite/factories/pathfinder_factory.lua b/game_scripts/levels/contributed/psychlab/visuospatial_suite/factories/pathfinder_factory.lua
index 9e4bc26f5..be0201c7a 100644
--- a/game_scripts/levels/contributed/psychlab/visuospatial_suite/factories/pathfinder_factory.lua
+++ b/game_scripts/levels/contributed/psychlab/visuospatial_suite/factories/pathfinder_factory.lua
@@ -80,11 +80,11 @@ function factory.createLevelApi(kwargs)
   env.__index = env
 
   setmetatable(env, {
-    __call = function (cls, ...)
-      local self = setmetatable({}, cls)
-      self:_init(...)
-      return self
-    end
+      __call = function (cls, ...)
+        local self = setmetatable({}, cls)
+        self:_init(...)
+        return self
+      end
   })
 
   -- 'init' gets called at the start of each episode.
diff --git a/game_scripts/levels/contributed/psychlab/visuospatial_suite/factories/visual_match_factory.lua b/game_scripts/levels/contributed/psychlab/visuospatial_suite/factories/visual_match_factory.lua
index 40609f67b..556afe17d 100644
--- a/game_scripts/levels/contributed/psychlab/visuospatial_suite/factories/visual_match_factory.lua
+++ b/game_scripts/levels/contributed/psychlab/visuospatial_suite/factories/visual_match_factory.lua
@@ -61,11 +61,11 @@ function factory.createLevelApi(kwargs)
   env.__index = env
 
   setmetatable(env, {
-    __call = function (cls, ...)
-      local self = setmetatable({}, cls)
-      self:_init(...)
-      return self
-    end
+      __call = function (cls, ...)
+        local self = setmetatable({}, cls)
+        self:_init(...)
+        return self
+      end
   })
 
   -- 'init' gets called at the start of each episode.
@@ -136,9 +136,9 @@ function factory.createLevelApi(kwargs)
       self.trialId = self.trialId + 1
       self:addArray()
       self.pac:addTimer{
-        name = 'trial_timeout',
-        timeout = defaults.TRIAL_TIMEOUT,
-        callback = function(...) return self:trialTimeoutCallback() end
+          name = 'trial_timeout',
+          timeout = defaults.TRIAL_TIMEOUT,
+          callback = function(...) return self:trialTimeoutCallback() end
       }
       -- Measure reaction time since the trial started.
       self._currentTrialStartTime = game:episodeTimeSeconds()
@@ -220,10 +220,10 @@ function factory.createLevelApi(kwargs)
       local image = self:createImage(
           shape, color, objectHeight, objectWidth)
       self.pac:addWidget{
-        name = 'image_' .. i,
-        pos = pos,
-        size = size,
-        image = image,
+          name = 'image_' .. i,
+          pos = pos,
+          size = size,
+          image = image,
       }
     end
 
@@ -245,12 +245,12 @@ function factory.createLevelApi(kwargs)
         hoverEndCallback = self.onHoverEndIncorrect
       end
       self.pac:addWidget{
-        name = 'button_' .. tostring(i),
-        image = buttonImage,
-        pos = {buttonPosX, 1 - defaults.BUTTON_SIZE},
-        size = {defaults.BUTTON_SIZE, defaults.BUTTON_SIZE},
-        mouseHoverCallback = responseCallback,
-        mouseHoverEndCallback = hoverEndCallback,
+          name = 'button_' .. tostring(i),
+          image = buttonImage,
+          pos = {buttonPosX, 1 - defaults.BUTTON_SIZE},
+          size = {defaults.BUTTON_SIZE, defaults.BUTTON_SIZE},
+          mouseHoverCallback = responseCallback,
+          mouseHoverEndCallback = hoverEndCallback,
       }
     end
   end
diff --git a/game_scripts/levels/tests/custom_actions_test.lua b/game_scripts/levels/tests/custom_actions_test.lua
index 966a9e12c..d1ecf08c4 100644
--- a/game_scripts/levels/tests/custom_actions_test.lua
+++ b/game_scripts/levels/tests/custom_actions_test.lua
@@ -30,8 +30,8 @@ end
 
 function api:customDiscreteActionSpec()
   return {
-    {name = 'SWITCH_GADGET', min = -1, max = 1},
-    {name = 'SELECT_GADGET', min = 0, max = 10},
+      {name = 'SWITCH_GADGET', min = -1, max = 1},
+      {name = 'SELECT_GADGET', min = 0, max = 10},
   }
 end
 
diff --git a/game_scripts/levels/tests/debug_observation_test.lua b/game_scripts/levels/tests/debug_observation_test.lua
index 8f80e7da5..522d416e2 100644
--- a/game_scripts/levels/tests/debug_observation_test.lua
+++ b/game_scripts/levels/tests/debug_observation_test.lua
@@ -29,8 +29,8 @@ local MAP = [[
 ]]
 
 local api = factory.createLevelApi{
-  episodeLengthSeconds = 60 * 5,
-  botCount = 1
+    episodeLengthSeconds = 60 * 5,
+    botCount = 1
 }
 
 local spawnCount = 1
diff --git a/game_scripts/levels/tests/episode_time_test.lua b/game_scripts/levels/tests/episode_time_test.lua
index a68ee4a92..2e8ed1fae 100644
--- a/game_scripts/levels/tests/episode_time_test.lua
+++ b/game_scripts/levels/tests/episode_time_test.lua
@@ -22,7 +22,7 @@ local api = {}
 
 function api:customObservationSpec()
   return {
-    {name = 'EPISODE_TIME_SECONDS', type = 'Doubles', shape = {1}},
+      {name = 'EPISODE_TIME_SECONDS', type = 'Doubles', shape = {1}},
   }
 end
 
diff --git a/game_scripts/levels/tests/extra_entities_with_bots_test.lua b/game_scripts/levels/tests/extra_entities_with_bots_test.lua
index 1aabdf747..98fa909a2 100644
--- a/game_scripts/levels/tests/extra_entities_with_bots_test.lua
+++ b/game_scripts/levels/tests/extra_entities_with_bots_test.lua
@@ -52,7 +52,7 @@ end
 
 function api:addBots()
   local bots = {
-    {name = 'Cygni', skill = 5.0}
+      {name = 'Cygni', skill = 5.0}
   }
   return bots
 end
diff --git a/game_scripts/levels/tests/lookat_test.lua b/game_scripts/levels/tests/lookat_test.lua
index 75376c828..c50541c13 100644
--- a/game_scripts/levels/tests/lookat_test.lua
+++ b/game_scripts/levels/tests/lookat_test.lua
@@ -38,7 +38,7 @@ end
 
 function api:customObservationSpec()
   return {
-    {name = 'LOOK_AT', type = 'Doubles', shape = lookAt:shape()},
+      {name = 'LOOK_AT', type = 'Doubles', shape = lookAt:shape()},
   }
 end
 
diff --git a/game_scripts/levels/tests/model_test.lua b/game_scripts/levels/tests/model_test.lua
index fc0c599a2..4fbee197c 100644
--- a/game_scripts/levels/tests/model_test.lua
+++ b/game_scripts/levels/tests/model_test.lua
@@ -23,25 +23,25 @@ local api = {}
 function api:createModel(modelName)
   local models = {
       cone = model:cone{
-        phiSegments = 4,
-        radiusSegments = 4,
-        heightSegments = 4,
-        shaderName = 'textures/model/beam'
+          phiSegments = 4,
+          radiusSegments = 4,
+          heightSegments = 4,
+          shaderName = 'textures/model/beam'
       },
       cube = model:cube{
-        segments = 4,
-        shaderName = 'textures/model/beam'
+          segments = 4,
+          shaderName = 'textures/model/beam'
       },
       cylinder = model:cylinder{
-        phiSegments = 4,
-        radiusSegments = 4,
-        heightSegments = 4,
-        shaderName = 'textures/model/beam'
+          phiSegments = 4,
+          radiusSegments = 4,
+          heightSegments = 4,
+          shaderName = 'textures/model/beam'
       },
       sphere = model:sphere{
-        phiSegments = 4,
-        thetaSegments = 4,
-        shaderName = 'textures/model/beam'
+          phiSegments = 4,
+          thetaSegments = 4,
+          shaderName = 'textures/model/beam'
       },
       hierarchy = model:hierarchy{
           transform = transform.rotateX(180),
diff --git a/game_scripts/levels/tests/team_model_select.lua b/game_scripts/levels/tests/team_model_select.lua
index b45f427a1..48bdde1bc 100644
--- a/game_scripts/levels/tests/team_model_select.lua
+++ b/game_scripts/levels/tests/team_model_select.lua
@@ -32,8 +32,8 @@ local MAP = [[
 ]]
 
 local api = factory.createLevelApi{
-  episodeLengthSeconds = 60 * 5,
-  botCount = 6,
+    episodeLengthSeconds = 60 * 5,
+    botCount = 6,
 }
 
 local spawnCount = 1
diff --git a/game_scripts/levels/tests/update_inventory_test.lua b/game_scripts/levels/tests/update_inventory_test.lua
index 01ef7e070..13dbfcafb 100644
--- a/game_scripts/levels/tests/update_inventory_test.lua
+++ b/game_scripts/levels/tests/update_inventory_test.lua
@@ -51,8 +51,8 @@ end
 
 function api:customObservationSpec()
   return {
-    {name = 'DEBUG.AMOUNT', type = 'Doubles', shape = {1}},
-    {name = 'DEBUG.GADGET', type = 'Doubles', shape = {1}},
+      {name = 'DEBUG.AMOUNT', type = 'Doubles', shape = {1}},
+      {name = 'DEBUG.GADGET', type = 'Doubles', shape = {1}},
   }
 end
 
diff --git a/game_scripts/themes/decals.lua b/game_scripts/themes/decals.lua
index 826336ebe..91ecdc89e 100644
--- a/game_scripts/themes/decals.lua
+++ b/game_scripts/themes/decals.lua
@@ -30,6 +30,6 @@ for i = 1, NUMBER_OF_STYLES do
 end
 
 return {
-  decals = DEFAULT_WALL_DECALS,
-  images = DEFAULT_WALL_IMAGES,
+    decals = DEFAULT_WALL_DECALS,
+    images = DEFAULT_WALL_IMAGES,
 }