Audiosurf 2 is a music-themed rhythm game developed by Dylan Fitterer. Released as a sequel to the 2008 title Audiosurf, the game was initially launched through Steam Early Access in October 2013 and saw its full release on May 26, 2015.
The core gameplay mechanic involves the procedural generation of a racing track based on the rhythmic and melodic properties of a user-provided audio file. Players control a vehicle or character along a multi-lane track, collecting colored blocks that appear in sync with the music. The game incorporates various modes, such as "Mono," where players avoid specific obstacles while collecting all other items, and "Puzzle" modes, which require matching colored blocks to earn points.
Audiosurf 2 introduced several technical and functional updates over its predecessor. These include enhanced graphical fidelity and the integration of the Steam Workshop, which allows users to create and share custom game modes, "skins" (visual themes), and gameplay modifications. A notable addition to this version was the "Wakeboard" mode, which focuses on performing aerial maneuvers and tricks timed to the music's intensity.
The game supports a variety of audio formats, including MP3, OGG, and FLAC. It also featured integration with online music streaming services, such as SoundCloud, allowing players to generate tracks from online libraries in addition to local files.
Audiosurf 2 is categorized within the rhythm and independent game genres. It received generally positive reviews for its visual style and the fidelity of its music-analysis algorithms, though some critics noted that it maintained a high degree of similarity to the original game's structure.