Roving Screens builds social mobile games that combine addictive casual-game mechanics with the physical activity encouraged by Wii Fit and Microsoft Kinect. Many mobile phones include motion and position sensors equivalent to those in game consoles, but these features have been underexploited for both gaming and physicalfitness. Our first title, CubeQuest, is a series of minigames based on motion...Roving Screens builds social mobile games that combine addictive casual-game mechanics with the physical activity encouraged by Wii Fit and Microsoft Kinect. Many mobile phones include motion and position sensors equivalent to those in game consoles, but these features have been underexploited for both gaming and physicalfitness. Our first title, CubeQuest, is a series of minigames based on motion and geolocation, with the player's activity level represented as a social avatar.