diff --git a/plugins/layer3d/Layer3DCreator.js b/plugins/layer3d/Layer3DCreator.js
index 547844caf..07e7da089 100644
--- a/plugins/layer3d/Layer3DCreator.js
+++ b/plugins/layer3d/Layer3DCreator.js
@@ -16,7 +16,7 @@ var Layer3D = require('./Layer3D');
  * @method Phaser.GameObjects.GameObjectCreator#layer3d
  * @since 3.50.0
  *
- * @param {object} config - The configuration object this Game Object will use to create itself.
+ * @param {Phaser.Types.GameObjects.GameObjectConfig} config - The configuration object this Game Object will use to create itself.
  * @param {boolean} [addToScene] - Add this Game Object to the Scene after creating it? If set this argument overrides the `add` property in the config object.
  *
  * @return {Phaser.GameObjects.Layer3D} The Game Object that was created.
diff --git a/src/gameobjects/bitmaptext/ParseRetroFont.js b/src/gameobjects/bitmaptext/ParseRetroFont.js
index b6ce7227a..ea18c1e44 100644
--- a/src/gameobjects/bitmaptext/ParseRetroFont.js
+++ b/src/gameobjects/bitmaptext/ParseRetroFont.js
@@ -16,7 +16,7 @@ var GetValue = require('../../utils/object/GetValue');
  * @param {Phaser.Scene} scene - A reference to the Phaser Scene.
  * @param {Phaser.Types.GameObjects.BitmapText.RetroFontConfig} config - The font configuration object.
  *
- * @return {object} A parsed Bitmap Font data entry for the Bitmap Font cache.
+ * @return {Phaser.Types.GameObjects.BitmapText.BitmapFontData} A parsed Bitmap Font data entry for the Bitmap Font cache.
  */
 var ParseRetroFont = function (scene, config)
 {
diff --git a/src/gameobjects/blitter/BlitterCreator.js b/src/gameobjects/blitter/BlitterCreator.js
index f7ed4a09e..68d8b979c 100644
--- a/src/gameobjects/blitter/BlitterCreator.js
+++ b/src/gameobjects/blitter/BlitterCreator.js
@@ -17,7 +17,7 @@ var GetAdvancedValue = require('../../utils/object/GetAdvancedValue');
  * @method Phaser.GameObjects.GameObjectCreator#blitter
  * @since 3.0.0
  *
- * @param {object} config - The configuration object this Game Object will use to create itself.
+ * @param {Phaser.Types.GameObjects.Sprite.SpriteConfig} config - The configuration object this Game Object will use to create itself.
  * @param {boolean} [addToScene] - Add this Game Object to the Scene after creating it? If set this argument overrides the `add` property in the config object.
  *
  * @return {Phaser.GameObjects.Blitter} The Game Object that was created.
diff --git a/src/gameobjects/container/ContainerCreator.js b/src/gameobjects/container/ContainerCreator.js
index e1d6361a1..8c2e42304 100644
--- a/src/gameobjects/container/ContainerCreator.js
+++ b/src/gameobjects/container/ContainerCreator.js
@@ -18,7 +18,7 @@ var GetAdvancedValue = require('../../utils/object/GetAdvancedValue');
  * @method Phaser.GameObjects.GameObjectCreator#container
  * @since 3.4.0
  *
- * @param {object} config - The configuration object this Game Object will use to create itself.
+ * @param {Phaser.Types.GameObjects.Container.ContainerConfig} config - The configuration object this Game Object will use to create itself.
  * @param {boolean} [addToScene] - Add this Game Object to the Scene after creating it? If set this argument overrides the `add` property in the config object.
  *
  * @return {Phaser.GameObjects.Container} The Game Object that was created.
diff --git a/src/gameobjects/container/typedefs/ContainerConfig.js b/src/gameobjects/container/typedefs/ContainerConfig.js
new file mode 100644
index 000000000..aabf189c2
--- /dev/null
+++ b/src/gameobjects/container/typedefs/ContainerConfig.js
@@ -0,0 +1,7 @@
+/**
+ * @typedef {object} Phaser.Types.GameObjects.Container.ContainerConfig
+ * @extends Phaser.Types.GameObjects.GameObjectConfig
+ * @since 3.50.0
+ *
+ * @property {Phaser.GameObjects.GameObject[]} [children] - An optional array of Game Objects to add to the Container.
+ */
diff --git a/src/gameobjects/container/typedefs/index.js b/src/gameobjects/container/typedefs/index.js
new file mode 100644
index 000000000..5ec4169f8
--- /dev/null
+++ b/src/gameobjects/container/typedefs/index.js
@@ -0,0 +1,9 @@
+/**
+ * @author       Richard Davey <rich@photonstorm.com>
+ * @copyright    2020 Photon Storm Ltd.
+ * @license      {@link https://opensource.org/licenses/MIT|MIT License}
+ */
+
+/**
+ * @namespace Phaser.Types.GameObjects.Container
+ */
diff --git a/src/gameobjects/graphics/GraphicsCreator.js b/src/gameobjects/graphics/GraphicsCreator.js
index 0437ba08c..8cc4ec7b1 100644
--- a/src/gameobjects/graphics/GraphicsCreator.js
+++ b/src/gameobjects/graphics/GraphicsCreator.js
@@ -15,7 +15,7 @@ var Graphics = require('./Graphics');
  * @method Phaser.GameObjects.GameObjectCreator#graphics
  * @since 3.0.0
  *
- * @param {object} config - The configuration object this Game Object will use to create itself.
+ * @param {Phaser.Types.GameObjects.Graphics.Options} config - The configuration object this Game Object will use to create itself.
  * @param {boolean} [addToScene] - Add this Game Object to the Scene after creating it? If set this argument overrides the `add` property in the config object.
  *
  * @return {Phaser.GameObjects.Graphics} The Game Object that was created.
diff --git a/src/gameobjects/image/ImageCreator.js b/src/gameobjects/image/ImageCreator.js
index a9487f96e..f95d376cc 100644
--- a/src/gameobjects/image/ImageCreator.js
+++ b/src/gameobjects/image/ImageCreator.js
@@ -17,7 +17,7 @@ var Image = require('./Image');
  * @method Phaser.GameObjects.GameObjectCreator#image
  * @since 3.0.0
  *
- * @param {object} config - The configuration object this Game Object will use to create itself.
+ * @param {Phaser.Types.GameObjects.Sprite.SpriteConfig} config - The configuration object this Game Object will use to create itself.
  * @param {boolean} [addToScene] - Add this Game Object to the Scene after creating it? If set this argument overrides the `add` property in the config object.
  *
  * @return {Phaser.GameObjects.Image} The Game Object that was created.
diff --git a/src/gameobjects/layer/LayerCreator.js b/src/gameobjects/layer/LayerCreator.js
index 18fb8a58e..f21af7680 100644
--- a/src/gameobjects/layer/LayerCreator.js
+++ b/src/gameobjects/layer/LayerCreator.js
@@ -17,7 +17,7 @@ var GetAdvancedValue = require('../../utils/object/GetAdvancedValue');
  * @method Phaser.GameObjects.GameObjectCreator#layer
  * @since 3.50.0
  *
- * @param {object} config - The configuration object this Game Object will use to create itself.
+ * @param {Phaser.Types.GameObjects.Sprite.SpriteConfig} config - The configuration object this Game Object will use to create itself.
  * @param {boolean} [addToScene] - Add this Game Object to the Scene after creating it? If set this argument overrides the `add` property in the config object.
  *
  * @return {Phaser.GameObjects.Layer} The Game Object that was created.
diff --git a/src/gameobjects/mesh/MeshCreator.js b/src/gameobjects/mesh/MeshCreator.js
index 4125d4024..6f9634cb9 100644
--- a/src/gameobjects/mesh/MeshCreator.js
+++ b/src/gameobjects/mesh/MeshCreator.js
@@ -18,7 +18,7 @@ var Mesh = require('./Mesh');
  * @method Phaser.GameObjects.GameObjectCreator#mesh
  * @since 3.0.0
  *
- * @param {object} config - The configuration object this Game Object will use to create itself.
+ * @param {Phaser.Types.GameObjects.Mesh.MeshConfig} config - The configuration object this Game Object will use to create itself.
  * @param {boolean} [addToScene] - Add this Game Object to the Scene after creating it? If set this argument overrides the `add` property in the config object.
  *
  * @return {Phaser.GameObjects.Mesh} The Game Object that was created.
diff --git a/src/gameobjects/mesh/typedefs/MeshConfig.js b/src/gameobjects/mesh/typedefs/MeshConfig.js
new file mode 100644
index 000000000..f16873783
--- /dev/null
+++ b/src/gameobjects/mesh/typedefs/MeshConfig.js
@@ -0,0 +1,15 @@
+/**
+ * @typedef {object} Phaser.Types.GameObjects.Mesh.MeshConfig
+ * @extends Phaser.Types.GameObjects.GameObjectConfig
+ * @since 3.0.0
+ *
+ * @property {string} [key] - The key, or instance of the Texture this Game Object will use to render with, as stored in the Texture Manager.
+ * @property {string|number} [frame] - An optional frame from the Texture this Game Object is rendering with.
+ * @property {number[]} [vertices] - The vertices array. Either `xy` pairs, or `xyz` if the `containsZ` parameter is `true`.
+ * @property {number[]} [uvs] - The UVs pairs array.
+ * @property {number[]} [indicies] - Optional vertex indicies array. If you don't have one, pass `null` or an empty array.
+ * @property {boolean} [containsZ=false] - Does the vertices data include a `z` component?
+ * @property {number[]} [normals] - Optional vertex normals array. If you don't have one, pass `null` or an empty array.
+ * @property {number|number[]} [colors=0xffffff] - An array of colors, one per vertex, or a single color value applied to all vertices.
+ * @property {number|number[]} [alphas=1] - An array of alpha values, one per vertex, or a single alpha value applied to all vertices.
+ */
diff --git a/src/gameobjects/mesh/typedefs/index.js b/src/gameobjects/mesh/typedefs/index.js
new file mode 100644
index 000000000..be2056cb7
--- /dev/null
+++ b/src/gameobjects/mesh/typedefs/index.js
@@ -0,0 +1,9 @@
+/**
+ * @author       Richard Davey <rich@photonstorm.com>
+ * @copyright    2020 Photon Storm Ltd.
+ * @license      {@link https://opensource.org/licenses/MIT|MIT License}
+ */
+
+/**
+ * @namespace Phaser.Types.GameObjects.Mesh
+ */
diff --git a/src/gameobjects/particles/ParticleManagerCreator.js b/src/gameobjects/particles/ParticleManagerCreator.js
index 4c1c9f386..69b87c7f2 100644
--- a/src/gameobjects/particles/ParticleManagerCreator.js
+++ b/src/gameobjects/particles/ParticleManagerCreator.js
@@ -17,7 +17,7 @@ var ParticleEmitterManager = require('./ParticleEmitterManager');
  * @method Phaser.GameObjects.GameObjectCreator#particles
  * @since 3.0.0
  *
- * @param {object} config - The configuration object this Game Object will use to create itself.
+ * @param {Phaser.Types.GameObjects.Particles.ParticleEmitterManagerConfig} config - The configuration object this Game Object will use to create itself.
  * @param {boolean} [addToScene] - Add this Game Object to the Scene after creating it? If set this argument overrides the `add` property in the config object.
  *
  * @return {Phaser.GameObjects.Particles.ParticleEmitterManager} The Game Object that was created.
diff --git a/src/gameobjects/particles/typedefs/ParticleEmitterManagerConfig.js b/src/gameobjects/particles/typedefs/ParticleEmitterManagerConfig.js
new file mode 100644
index 000000000..e2fae4dab
--- /dev/null
+++ b/src/gameobjects/particles/typedefs/ParticleEmitterManagerConfig.js
@@ -0,0 +1,8 @@
+/**
+ * @typedef {object} Phaser.Types.GameObjects.Particles.ParticleEmitterManagerConfig
+ * @since 3.0.0
+ *
+ * @property {string} [key] - The key of the Texture this Emitter Manager will use to render particles, as stored in the Texture Manager.
+ * @property {(number|string)} [frame] - An optional frame from the Texture this Emitter Manager will use to render particles.
+ * @property {Phaser.Types.GameObjects.Particles.ParticleEmitterConfig|Phaser.Types.GameObjects.Particles.ParticleEmitterConfig[]} [emitters] - Configuration settings for one or more emitters to create.
+ */
diff --git a/src/gameobjects/rope/RopeCreator.js b/src/gameobjects/rope/RopeCreator.js
index b133dc605..263e29a71 100644
--- a/src/gameobjects/rope/RopeCreator.js
+++ b/src/gameobjects/rope/RopeCreator.js
@@ -18,7 +18,7 @@ var Rope = require('./Rope');
  * @method Phaser.GameObjects.GameObjectCreator#rope
  * @since 3.23.0
  *
- * @param {object} config - The configuration object this Game Object will use to create itself.
+ * @param {Phaser.Types.GameObjects.Rope.RopeConfig} config - The configuration object this Game Object will use to create itself.
  * @param {boolean} [addToScene] - Add this Game Object to the Scene after creating it? If set this argument overrides the `add` property in the config object.
  *
  * @return {Phaser.GameObjects.Rope} The Game Object that was created.
diff --git a/src/gameobjects/rope/typedefs/RopeConfig.js b/src/gameobjects/rope/typedefs/RopeConfig.js
new file mode 100644
index 000000000..5580186b2
--- /dev/null
+++ b/src/gameobjects/rope/typedefs/RopeConfig.js
@@ -0,0 +1,12 @@
+/**
+ * @typedef {object} Phaser.Types.GameObjects.Rope.RopeConfig
+ * @extends Phaser.Types.GameObjects.GameObjectConfig
+ * @since 3.50.0
+ *
+ * @property {string} [key] - The key of the Texture this Game Object will use to render with, as stored in the Texture Manager. If not given, `__DEFAULT` is used.
+ * @property {(string|integer|null)} [frame] - An optional frame from the Texture this Game Object is rendering with.
+ * @property {(integer|Phaser.Types.Math.Vector2Like[])} [points=2] - An array containing the vertices data for this Rope, or a number that indicates how many segments to split the texture frame into. If none is provided a simple quad is created. See `setPoints` to set this post-creation.
+ * @property {boolean} [horizontal=true] - Should the vertices of this Rope be aligned horizontally (`true`), or vertically (`false`)?
+ * @property {number[]} [colors] - An optional array containing the color data for this Rope. You should provide one color value per pair of vertices.
+ * @property {number[]} [alphas] - An optional array containing the alpha data for this Rope. You should provide one alpha value per pair of vertices.
+ */
diff --git a/src/gameobjects/rope/typedefs/index.js b/src/gameobjects/rope/typedefs/index.js
new file mode 100644
index 000000000..df11e152c
--- /dev/null
+++ b/src/gameobjects/rope/typedefs/index.js
@@ -0,0 +1,9 @@
+/**
+ * @author       Richard Davey <rich@photonstorm.com>
+ * @copyright    2020 Photon Storm Ltd.
+ * @license      {@link https://opensource.org/licenses/MIT|MIT License}
+ */
+
+/**
+ * @namespace Phaser.Types.GameObjects.Rope
+ */
diff --git a/src/gameobjects/shader/ShaderCreator.js b/src/gameobjects/shader/ShaderCreator.js
index f9a80950a..ea8237ff3 100644
--- a/src/gameobjects/shader/ShaderCreator.js
+++ b/src/gameobjects/shader/ShaderCreator.js
@@ -17,7 +17,7 @@ var Shader = require('./Shader');
  * @method Phaser.GameObjects.GameObjectCreator#shader
  * @since 3.17.0
  *
- * @param {object} config - The configuration object this Game Object will use to create itself.
+ * @param {Phaser.Types.GameObjects.Shader.ShaderConfig} config - The configuration object this Game Object will use to create itself.
  * @param {boolean} [addToScene] - Add this Game Object to the Scene after creating it? If set this argument overrides the `add` property in the config object.
  *
  * @return {Phaser.GameObjects.Shader} The Game Object that was created.
diff --git a/src/gameobjects/shader/typedefs/ShaderConfig.js b/src/gameobjects/shader/typedefs/ShaderConfig.js
new file mode 100644
index 000000000..22cd44365
--- /dev/null
+++ b/src/gameobjects/shader/typedefs/ShaderConfig.js
@@ -0,0 +1,9 @@
+/**
+ * @typedef {object} Phaser.Types.GameObjects.Shader.ShaderConfig
+ * @extends Phaser.Types.GameObjects.GameObjectConfig
+ * @since 3.50.0
+ *
+ * @property {(string|Phaser.Display.BaseShader)} key - The key of the shader to use from the shader cache, or a BaseShader instance.
+ * @property {number} [width=128] - The width of the Game Object.
+ * @property {number} [height=128] - The height of the Game Object.
+ */
diff --git a/src/gameobjects/shader/typedefs/index.js b/src/gameobjects/shader/typedefs/index.js
new file mode 100644
index 000000000..43bdf5975
--- /dev/null
+++ b/src/gameobjects/shader/typedefs/index.js
@@ -0,0 +1,9 @@
+/**
+ * @author       Richard Davey <rich@photonstorm.com>
+ * @copyright    2020 Photon Storm Ltd.
+ * @license      {@link https://opensource.org/licenses/MIT|MIT License}
+ */
+
+/**
+ * @namespace Phaser.Types.GameObjects.Shader
+ */
diff --git a/src/gameobjects/video/VideoCreator.js b/src/gameobjects/video/VideoCreator.js
index 24adcdbb6..237109fa1 100644
--- a/src/gameobjects/video/VideoCreator.js
+++ b/src/gameobjects/video/VideoCreator.js
@@ -17,7 +17,7 @@ var Video = require('./Video');
  * @method Phaser.GameObjects.GameObjectCreator#video
  * @since 3.20.0
  *
- * @param {object} config - The configuration object this Game Object will use to create itself.
+ * @param {Phaser.Types.GameObjects.Video.VideoConfig} config - The configuration object this Game Object will use to create itself.
  * @param {boolean} [addToScene] - Add this Game Object to the Scene after creating it? If set this argument overrides the `add` property in the config object.
  *
  * @return {Phaser.GameObjects.Video} The Game Object that was created.
diff --git a/src/gameobjects/video/typedefs/VideoConfig.js b/src/gameobjects/video/typedefs/VideoConfig.js
new file mode 100644
index 000000000..37d75640e
--- /dev/null
+++ b/src/gameobjects/video/typedefs/VideoConfig.js
@@ -0,0 +1,7 @@
+/**
+ * @typedef {object} Phaser.Types.GameObjects.Video.VideoConfig
+ * @extends Phaser.Types.GameObjects.GameObjectConfig
+ * @since 3.50.0
+ *
+ * @property {string} [key] - Optional key of the Video this Game Object will play, as stored in the Video Cache.
+ */
diff --git a/src/gameobjects/video/typedefs/index.js b/src/gameobjects/video/typedefs/index.js
new file mode 100644
index 000000000..894fb1df3
--- /dev/null
+++ b/src/gameobjects/video/typedefs/index.js
@@ -0,0 +1,9 @@
+/**
+ * @author       Richard Davey <rich@photonstorm.com>
+ * @copyright    2020 Photon Storm Ltd.
+ * @license      {@link https://opensource.org/licenses/MIT|MIT License}
+ */
+
+/**
+ * @namespace Phaser.Types.GameObjects.Video
+ */
diff --git a/src/gameobjects/zone/ZoneCreator.js b/src/gameobjects/zone/ZoneCreator.js
index 2b2ba09da..a7817b65c 100644
--- a/src/gameobjects/zone/ZoneCreator.js
+++ b/src/gameobjects/zone/ZoneCreator.js
@@ -16,7 +16,7 @@ var Zone = require('./Zone');
  * @method Phaser.GameObjects.GameObjectCreator#zone
  * @since 3.0.0
  *
- * @param {object} config - The configuration object this Game Object will use to create itself.
+ * @param {Phaser.Types.GameObjects.Zone.ZoneConfig} config - The configuration object this Game Object will use to create itself.
  *
  * @return {Phaser.GameObjects.Zone} The Game Object that was created.
  */
diff --git a/src/gameobjects/zone/typedefs/ZoneConfig.js b/src/gameobjects/zone/typedefs/ZoneConfig.js
new file mode 100644
index 000000000..44f1d6959
--- /dev/null
+++ b/src/gameobjects/zone/typedefs/ZoneConfig.js
@@ -0,0 +1,8 @@
+/**
+ * @typedef {object} Phaser.Types.GameObjects.Zone.ZoneConfig
+ * @extends Phaser.Types.GameObjects.GameObjectConfig
+ * @since 3.50.0
+ *
+ * @property {number} [width=1] - The width of the Game Object.
+ * @property {number} [height=1] - The height of the Game Object.
+ */
diff --git a/src/gameobjects/zone/typedefs/index.js b/src/gameobjects/zone/typedefs/index.js
new file mode 100644
index 000000000..98d3bb3c1
--- /dev/null
+++ b/src/gameobjects/zone/typedefs/index.js
@@ -0,0 +1,9 @@
+/**
+ * @author       Richard Davey <rich@photonstorm.com>
+ * @copyright    2020 Photon Storm Ltd.
+ * @license      {@link https://opensource.org/licenses/MIT|MIT License}
+ */
+
+/**
+ * @namespace Phaser.Types.GameObjects.Zone
+ */