Audiosurf is a 2008 puzzle music game created by Invisible Handlebar, a company founded by Dylan Fitterer.

The full version was for a long time only available for purchase through Steam, but was later released as a retail product in Europe, by Ascaron.

In Audiosurf, the player controls a levitating vehicle and maneuvers it through a multi-lane highway, collecting blocks.

The music used in the game is chosen from the user's own library, from almost any DRM-free format, as well as standard redbook CDs.

[citation needed] Audiosurf synchronizes the environment, traffic patterns, and scenery with the events in the current song.

The game loads the environment from the ASH files, with the track's elevation, surface, and layout reflected in the dynamics of the music being played.

A portable version of the game called Audiosurf: Tilt was released on November 11, 2009, for the Zune HD.

The game follows one basic formula, in which the player tries to collect all the blocks while dodging roadblocks (it can be played at "normal" and "turbo" speeds).

[12] Eurogamer were slightly less impressed, giving the game a 7 out of 10, criticizing its rough edges, yet remained convinced that the title had enough potential to become "a bite-sized obsession".