Fluidity: Spin Cycle

This highly playable puzzler grabs hold quickly with its highly intuitive motion-based controls. Spinning a 3DS to control the flow of the game's water spirit just feels right, and the difficulty of the puzzles grows so gradually that kids are unlikely to become too frustrated. Plus, setting the action inside a book brought to life -- you'll actually pass by passages of prose in the background describing, say, the dinosaur bones you're washing over -- invites players to take interest in not just the action, but also the world. It's a little short, but lots of collectibles means there's plenty of reason to go back and replay each maze multiple times. A great pick to kill a few minutes on a bus or an hour while nestled on the couch.