Happy Wheels is a ragdoll physics-based platform browser game developed and published by American studio Fancy Force. Created by video game designer Jim Bonacci in 2010, the game features several player characters, who use different, sometimes atypical, vehicles to traverse the game's many levels. The game is best known for its graphic violence and the amount of user-generated content its players produce on a regular basis, with game maps shared on a public server. (wikipedia.org)