Question: I have a scene in andEngine. The scene has basically three animated objects. I want to add and remove means show and hide on the screen. Hows that possible?

Answer: 
Keep in mind that I don't own an Android phone, and I have never used this API.

I think you'd need to add and remove sprites to the scene-graph:

* Removing: <http://code.google.com/p/andengineexamples/source/browse/src/org/anddev/andengine/examples/SpriteRemoveExample.java>

Example code:

```
scene.detachChild(childSpriteVariable);

```

* Adding: <http://code.google.com/p/andengineexamples/source/browse/src/org/anddev/andengine/examples/SpriteExample.java>

Example code:

```
final Sprite face = new Sprite(centerX, centerY, this.mFaceTextureRegion);
scene.attachChild(face);

```

I'm basically getting this information by browsing this site. It seems to be the only official docs this engine has:

<http://code.google.com/p/andengineexamples/>
To remove an object from a scene: (in this case a Sprite object but you can remove any entity)

```
 scene.getTopLayer().removeEntity(sprite);

```

To hide a scene:

```
scene.back();

```