diff --git a/scripts/tsgen/test/src/game.ts b/scripts/tsgen/test/src/game.ts
index d8b108110c..add8d5e9d8 100644
--- a/scripts/tsgen/test/src/game.ts
+++ b/scripts/tsgen/test/src/game.ts
@@ -347,6 +347,49 @@ class BootScene extends Phaser.Scene {
             loop: 2
         });
 
+        // Tween configs support custom tween properties without an object fallback
+        this.tweens.create({
+            targets: sprite,
+            customValue: 100
+        });
+
+        this.tweens.addMultiple([
+            { targets: sprite, customValue: 200 },
+            tween,
+            chain
+        ]);
+
+        this.tweens.create({
+            targets: sprite,
+            tweens: [
+                { customValue: 300 }
+            ]
+        });
+
+        this.tweens.chain({
+            tweens: [
+                { targets: sprite, customValue: 400 },
+                tween
+            ],
+            customChainOption: true
+        });
+
+        this.tweens.create(chain);
+        this.tweens.chain(chain);
+        chain.add([ tween ]);
+
+        // @ts-expect-error Invalid primitives are not Tween configuration objects
+        this.tweens.create([1]);
+
+        // @ts-expect-error Arbitrary objects are not Tween configuration objects
+        this.tweens.create({ unexpected: true });
+
+        // @ts-expect-error Tween chain configurations require the typed config shape
+        this.tweens.chain({});
+
+        // @ts-expect-error Invalid primitives are not Tween configuration objects
+        this.tweens.addMultiple([1]);
+
         // Number tween
         let counter = this.tweens.addCounter({
             from: 0,
diff --git a/src/tweens/TweenManager.js b/src/tweens/TweenManager.js
index 152f445a55..9844e026fd 100644
--- a/src/tweens/TweenManager.js
+++ b/src/tweens/TweenManager.js
@@ -258,9 +258,9 @@ var TweenManager = new Class({
      * @method Phaser.Tweens.TweenManager#create
      * @since 3.0.0
      *
-     * @param {Phaser.Types.Tweens.TweenBuilderConfig|Phaser.Types.Tweens.TweenBuilderConfig[]|object|object[]} config - A Tween Configuration object. Or an array of Tween Configuration objects.
+     * @param {Phaser.Types.Tweens.TweenBuilderConfig|Phaser.Types.Tweens.TweenChainBuilderConfig|Phaser.Tweens.Tween|Phaser.Tweens.TweenChain|Array.<(Phaser.Types.Tweens.TweenBuilderConfig|Phaser.Types.Tweens.TweenChainBuilderConfig|Phaser.Tweens.Tween|Phaser.Tweens.TweenChain)>} config - A Tween Configuration object, a Tween or TweenChain instance, or an array of them.
      *
-     * @return {Phaser.Tweens.Tween|Phaser.Tweens.Tween[]} The created Tween, or an array of Tweens if an array of tween configs was provided.
+     * @return {Phaser.Tweens.Tween|Phaser.Tweens.TweenChain|Array.<(Phaser.Tweens.Tween|Phaser.Tweens.TweenChain)>} The created Tween or TweenChain, or an array of them if an array was provided.
      */
     create: function (config)
     {
@@ -376,9 +376,9 @@ var TweenManager = new Class({
      * @method Phaser.Tweens.TweenManager#addMultiple
      * @since 3.60.0
      *
-     * @param {Phaser.Types.Tweens.TweenBuilderConfig[]|object[]} configs - An array of Tween Configuration objects.
+     * @param {Array.<(Phaser.Types.Tweens.TweenBuilderConfig|Phaser.Types.Tweens.TweenChainBuilderConfig|Phaser.Tweens.Tween|Phaser.Tweens.TweenChain)>} configs - An array of Tween Configuration objects, Tweens or TweenChains.
      *
-     * @return {Phaser.Tweens.Tween[]} An array of created Tweens.
+     * @return {Array.<(Phaser.Tweens.Tween|Phaser.Tweens.TweenChain)>} An array of created Tweens and TweenChains.
      */
     addMultiple: function (configs)
     {
@@ -429,7 +429,7 @@ var TweenManager = new Class({
      * @method Phaser.Tweens.TweenManager#chain
      * @since 3.60.0
      *
-     * @param {Phaser.Types.Tweens.TweenChainBuilderConfig|object} tweens - A Tween Chain configuration object.
+     * @param {Phaser.Types.Tweens.TweenChainBuilderConfig|Phaser.Tweens.TweenChain} config - A Tween Chain configuration object or TweenChain instance.
      *
      * @return {Phaser.Tweens.TweenChain} The Tween Chain instance.
      */
diff --git a/src/tweens/builders/TweenBuilder.js b/src/tweens/builders/TweenBuilder.js
index ece8e91d96..48f00d3232 100644
--- a/src/tweens/builders/TweenBuilder.js
+++ b/src/tweens/builders/TweenBuilder.js
@@ -42,7 +42,7 @@ var Tween = require('../tween/Tween');
  * @since 3.0.0
  *
  * @param {Phaser.Tweens.TweenManager} parent - The owner of the new Tween.
- * @param {Phaser.Types.Tweens.TweenBuilderConfig|object} config - Configuration for the new Tween.
+ * @param {Phaser.Types.Tweens.TweenBuilderConfig|Phaser.Tweens.Tween} config - Configuration for the new Tween, or an existing Tween instance.
  * @param {Phaser.Types.Tweens.TweenConfigDefaults} defaults - Tween configuration defaults.
  *
  * @return {Phaser.Tweens.Tween} The new tween.
diff --git a/src/tweens/builders/TweenChainBuilder.js b/src/tweens/builders/TweenChainBuilder.js
index 83202feb0b..63be6bd652 100644
--- a/src/tweens/builders/TweenChainBuilder.js
+++ b/src/tweens/builders/TweenChainBuilder.js
@@ -30,7 +30,7 @@ var TweenChain = require('../tween/TweenChain');
  * @since 3.60.0
  *
  * @param {Phaser.Tweens.TweenManager} parent - The owner of the new Tween.
- * @param {Phaser.Types.Tweens.TweenChainBuilderConfig|object} config - Configuration for the new Tween.
+ * @param {Phaser.Types.Tweens.TweenChainBuilderConfig|Phaser.Tweens.TweenChain} config - Configuration for the new Tween Chain, or an existing TweenChain instance.
  *
  * @return {Phaser.Tweens.TweenChain} The new Tween Chain.
  */
diff --git a/src/tweens/tween/TweenChain.js b/src/tweens/tween/TweenChain.js
index 181f80979c..ed2706f412 100644
--- a/src/tweens/tween/TweenChain.js
+++ b/src/tweens/tween/TweenChain.js
@@ -107,7 +107,7 @@ var TweenChain = new Class({
      * @method Phaser.Tweens.TweenChain#add
      * @since 3.60.0
      *
-     * @param {Phaser.Types.Tweens.TweenBuilderConfig[]|object[]} tweens - An array of Tween configuration objects for the Tweens in this chain.
+     * @param {Array.<(Phaser.Types.Tweens.TweenBuilderConfig|Phaser.Types.Tweens.TweenChainBuilderConfig|Phaser.Tweens.Tween|Phaser.Tweens.TweenChain)>} tweens - An array of Tween configuration objects, Tweens or TweenChains.
      *
      * @return {this} This TweenChain instance.
      */
@@ -544,7 +544,7 @@ var TweenChain = new Class({
  * @method Phaser.GameObjects.GameObjectFactory#tweenchain
  * @since 3.60.0
  *
- * @param {Phaser.Types.Tweens.TweenBuilderConfig|object} config - The TweenChain configuration.
+ * @param {Phaser.Types.Tweens.TweenChainBuilderConfig|Phaser.Tweens.TweenChain} config - The TweenChain configuration or an existing TweenChain instance.
  *
  * @return {Phaser.Tweens.TweenChain} The TweenChain that was created.
  */
@@ -561,7 +561,7 @@ GameObjectFactory.register('tweenchain', function (config)
  * @method Phaser.GameObjects.GameObjectCreator#tweenchain
  * @since 3.60.0
  *
- * @param {Phaser.Types.Tweens.TweenBuilderConfig|object} config - The TweenChain configuration.
+ * @param {Phaser.Types.Tweens.TweenChainBuilderConfig|Phaser.Tweens.TweenChain} config - The TweenChain configuration or an existing TweenChain instance.
  *
  * @return {Phaser.Tweens.TweenChain} The TweenChain that was created.
  */
diff --git a/src/tweens/typedefs/TweenChainBuilderConfig.js b/src/tweens/typedefs/TweenChainBuilderConfig.js
index ae3efd28a9..0efcf9f2b1 100644
--- a/src/tweens/typedefs/TweenChainBuilderConfig.js
+++ b/src/tweens/typedefs/TweenChainBuilderConfig.js
@@ -3,13 +3,13 @@
  * @extends object
  * @since 3.60.0
  *
- * @property {any} targets - The object, or an array of objects, to run each tween on.
+ * @property {any} [targets] - The object, or an array of objects, to run each tween on.
  * @property {(number|function)} [delay=0] - The number of milliseconds to delay before the chain will start.
  * @property {string|number|function|object|array} [completeDelay=0] - The time the chain will wait before the onComplete event is dispatched once it has completed, in ms.
  * @property {string|number|function|object|array} [loop=0] - The number of times the chain will repeat. (A value of 1 means the chain will play twice, as it repeated once.) The first loop starts after every tween has completed once.
  * @property {string|number|function|object|array} [loopDelay=0] - The time the chain will pause before returning to the start for a repeat.
  * @property {boolean} [paused=false] - Does the chain start in a paused state (true) or playing (false)?
- * @property {Phaser.Types.Tweens.TweenBuilderConfig[]} [tweens] - The tweens to chain together.
+ * @property {Array.<(Partial.<Phaser.Types.Tweens.TweenBuilderConfig>|Phaser.Tweens.Tween)>} tweens - The tweens to chain together. Each Tween configuration can inherit targets from this Tween Chain.
  * @property {any} [callbackScope] - The scope (or context) for all of the callbacks. The default scope is the chain.
  * @property {Phaser.Types.Tweens.TweenOnCompleteCallback} [onComplete] - A function to call when the chain completes.
  * @property {array} [onCompleteParams] - Additional parameters to pass to `onComplete`.