Consider the following simple game: 20 squares floating around an iPhone's screen. Tapping a square causes that square to disappear.

What's the "best practices" way to set this up in Cocos2D?

Here's my plan so far:

• One Objective-c GameState singleton class (maintains list of active squares)
• One CCScene (since there's no menus etc)
• One CCLayer (child node of the scene)
• Many CCSprite nodes (one for each square, all child nodes of the layer)
• Each sprite listens for a tap on itself. Receive tap => remove from GameState

Since I'm relatively new to Cocos2D I'd like some feedback on this design. For example I'm unsure of the GameState singleton. Perhaps it's unnecessary.