Fuser is a Music, Rhythm, and Single-player video game developed by Harmonix for multiple platforms. The player takes the role of a musician at a large concert where he has a virtual table with four record characters and a list of records at the top of the screen. Each record has four tracks and represents a type of musical instruments like drums, guitar, or vocals.

The player can select a record, choose a specific track, and place it on any of the record characters. The player can add a new description to any record player that overrides the previous track. The single-player campaign has multiple concerts set at various venues. Every set, the player’s task is to make mixes, new tracks in time, and beat the instruments to score more points.

The virtual audience will ask the player for requests, such as specific songs or a particular type of instrument. Completing these requests scores, additional points improve the player’s rank to a five-star scale according to the total score during a concert.