LocoRoco (PSP)
PSP isn't home to as many 2D masterpieces as Nintendo's DS, possibly because it does a better job of producing 3D graphics and so developers are more likely to go with the most impressive feature of the hardware they're programming for. LocoRoco, however, is a beautiful, colorful, 2D game - and many consider it to be the best game on the system. Ooh, the irony.
The main character's squishy body may be made of warping polygons, but he always rolls left and right as though he were a 2D character. The 3D capabilities of the machine are used to rotate the backgrounds convincingly, but the gameplay does nothing with the third-dimensional capabilities of the objects on the screen. The result is a game where you can forget the tech and just enjoy the crazy, beautiful world.
