Try the cool free app I found called “Chain of Thought” on iPhone, iPod touch or iPad. This is a word association game based on sayings, phrases and idioms. For instance “bubble gum” goes together “gum ball” goes together, etc.
You will choose these words from the main screens. To some extent, you have to understand American language and culture to know some of the sayings. Here’s an image of the screen of this game when we start playing it with the rightmost screen showing the end result.
You can download ‘Chain Of Thought’, the free association word chain game for iOS 4.3 or later from the App Store.