diff --git a/packages/melonjs/skills/melonjs-3d-assets/SKILL.md b/packages/melonjs/skills/melonjs-3d-assets/SKILL.md
index 554dcbdaf..2dbbad810 100644
--- a/packages/melonjs/skills/melonjs-3d-assets/SKILL.md
+++ b/packages/melonjs/skills/melonjs-3d-assets/SKILL.md
@@ -33,11 +33,19 @@ or it renders flat. See `melonjs-3d` for the camera.
 |---|---|---|
 | `scale` | `1` | pixels per glTF unit, applied to the whole scene. Blender's metre-scale export usually needs 20–100. |
 | `container` | `game.world` | where the nodes are added |
-| `onLoaded` | `app.onLevelLoaded` | called with the **level id**, not the scene |
+| `onLoaded` | `game.onLevelLoaded` | called with the **level id**, not the scene |
 | `async` | `false` | return a promise that settles once the scene is in the world, instead of a boolean |
 | `rightHanded` | `true` | see below |
 | `lights` | `true` | instantiate authored `KHR_lights_punctual` lights as `Light3d` world children |
 | `lightIntensityScale` | — | keep authored intensity ratios instead of normalising every light to 1 |
+
+Those `game.` defaults are the engine's, not a recommendation. `game` is
+whichever `Application` finished `init()` last, so **pass `container`
+explicitly** from a `Stage`, where the right one is in your hand:
+
+```js
+level.load("sceneId", { container: this.app.world, scale: 40 });
+```
 | `castGroundShadow` | inherits the app setting (**on**) | blob shadows for this scene's meshes |
 | `shadowGroundY` | each object's own base | world Y of the floor the blobs land on |
 | `shadowOpacity` | `0.45` | how dark the blobs are |
diff --git a/packages/melonjs/skills/melonjs-effects-and-shaders/SKILL.md b/packages/melonjs/skills/melonjs-effects-and-shaders/SKILL.md
index 1773ae27c..87f013e80 100644
--- a/packages/melonjs/skills/melonjs-effects-and-shaders/SKILL.md
+++ b/packages/melonjs/skills/melonjs-effects-and-shaders/SKILL.md
@@ -136,9 +136,9 @@ bright pixels bleed into their neighbours — and it is the one to put on the
 camera:
 
 ```js
-game.viewport.addPostEffect(new BloomEffect(app.renderer));
+app.viewport.addPostEffect(new BloomEffect(app.renderer));
 // only the brightest highlights, with a wider halo
-game.viewport.addPostEffect(
+app.viewport.addPostEffect(
     new BloomEffect(app.renderer, { threshold: 0.85, radius: 4 }),
 );
 ```
@@ -154,8 +154,8 @@ reads as a white sticker. `exposure` lifts the image into the curve, and the
 curve (`aces`, `reinhard` or `exponential`) is baked at construction:
 
 ```js
-game.viewport.addPostEffect(new BloomEffect(app.renderer));
-game.viewport.addPostEffect(
+app.viewport.addPostEffect(new BloomEffect(app.renderer));
+app.viewport.addPostEffect(
     new ToneMappingEffect(app.renderer, { exposure: 1.6 }),
 );
 ```
diff --git a/packages/melonjs/skills/melonjs-tilemaps/SKILL.md b/packages/melonjs/skills/melonjs-tilemaps/SKILL.md
index 184d51ed8..a9031b7ed 100644
--- a/packages/melonjs/skills/melonjs-tilemaps/SKILL.md
+++ b/packages/melonjs/skills/melonjs-tilemaps/SKILL.md
@@ -38,6 +38,10 @@ also skip `src` and pass the map inline via `data` (with `format: "json"` or
 `level <id> not found` for an unknown id — synchronously, in both forms, because
 that is a typo rather than a load failure.
 
+Those `game.` defaults are the engine's own, and `game` is whichever
+`Application` finished `init()` last. **Pass `container` explicitly** from a
+`Stage`, which has the right one: `level.load("map", { container: this.app.world })`.
+
 **`level.load` is deferred while the game loop is running.** It calls
 `state.stop()` and finishes the load on a timer, after the current frame, so by
 default it returns `true` before anything is in the world. Two ways to sequence