AvatarLabs has released RhinoBall, a new game for iPhone and iPod touch promoting the upcoming film Bolt. In the game, players take control of Rhino the hamster, who is attempting to catch up to his friend Bolt by rolling his ball along city streets filled with cars and other obstacles. The game uses accelerometer-based controls, and is available now as free download from the App Store. Veiled Games has released Payday Roulette, its first game for…