Keeping a dozen cranky infants happy hardly sounds like a fun time in real life; on the iPhone, it's the premise of Dirty Diapers, a fast-twitch puzzler just released on the App Store.
Dirty Diapers is by Streaming Colour studios, which made 2009's Dapple, a game I still think highly of. In it, 12 babies are constantly waking up and fussing - needing either a bottle, a fresh diaper or a spell in the rocking chair. Drag the appropriate icon to the kid and he's happy. For another couple of seconds.