I love these kind of games that are small, cute and gives you instant satisfaction. I played this all my way to Austria and back on a conference trip. The weary way of traveling washed away with the awesome music of Locoroco.
You control the planet, tilting so that the MuiMui's can grow and get to the end of the level. Along the way you must watch out for the baddies and try to collect as much fruit as possible.
This is a game that makes you happy, in the same spirit as Sound Shapes. I'd love to give it 5up, but I require games to have much more depth to give them full score.