Stack the States
Build a stack of states while you collect a pile of knowledge! Identify states by their shapes, state flags, landmarks, capitals and major cities to move along in this game. Each correct answer gives you a state for you to use as a building block, which you carefully place into a steady stack that won't topple over.
This app's educational value is high; kids who didn't know any state's shapes or cities will become quite knowledgeable in little time, and the chance to unlock mini games is an effective motivation tool to keep playing. This is especially important with an app teaching geography, which some kids would consider dry and boring.
Luckily, there's also some cute animation and beautiful backgrounds to make the experience easy on the eyes.