Happy Wheels is a browser-based physics-based platform game developed and published by Fancy Force. The game was developed in 2010 by video game creator Jim Bonacci and has many player avatars who explore the game's many levels utilizing different, often odd, vehicles. The game is well-known for its graphic violence and the volume of user-generated material regularly created by its players, with game maps uploaded to a public server.

Happy Wheels has always been a really popular game. Some prominent YouTubers, such Markiplier and Jacksepticeye, popularized it by posting a plethora of videos in which they lose their wits and overact while hurtling through different courses. Earlier in this decade, the excessive amounts of violence and odd physics appeared to truly attract the interest of viewers, and it's likely the earliest example of a YouTube game.

happy wheels game is available on the App Store with roughly 60 levels to finish and several eccentric characters, such as an irresponsible father riding a bicycle with his kid in a baby seat that is not properly strapped. It also has a level editor that allows users to create their own physics-based obstacle courses.