Build an deck system like the game Heads up.
Use latest cocos2d.
So build a vertical scrollayer with 2 seperate area's. Area with items available from the start and an area with items that have to be bought. When items are bought the bought item goes to the deck with available items.
When pressed on an available item the item will animate and flip showing the back of the deck. With a back button and a play button.
When pressed on the play button the deck flips again and will go down beneath deck will show another deck "card" displaying a message.
This card can be scrolled down showing the mainmenu again.