Happy Wheels is a popular side-scrolling, physics-based, obstacle course game that has over a billion plays online and is now available for iPhones, iPads, and iPod Touches. The game is developed by Jim Bonacci and is free to play. Happy Wheels is categorized under the Games section, but it doesn't have any subcategories.

In Happy Wheels, you get to play as different characters such as Pogo Stick Guy, Effective Shopper in an electric motor cart, Wheelchair Guy on a jet-powered wheelchair, Irresponsible Dad and his son on a bicycle, or as Business Guy on a personal transporter. The objective of the game is to complete over 60 unique and challenging levels while avoiding deadly obstacles such as spikes, mines, wrecking balls, harpoons, and much more. The game has smooth and realistic physics and supports Game Center leaderboard.