The game features both single-player and multiplayer modes as well as the means to share remixes with other users.

In Fuser, the player takes the role of a DJ at a large concert and make a mashup of different songs.

Each record has four tracks keyed by color and related to a type of musical instrument such as drums, guitar or vocals.

[1] To achieve a high score, the player has the opportunity to customize the contents of the crate to be as efficient as possible in switching between tracks.

[2] Fuser also includes both cooperative and competitive multiplayer modes that let players collaborate on creating a mix, or battle against each other.

The game also features a freestyle mode that allows players to create their own mixes and share them with others over social media.

This presents a few "Diamond Stage" dedicated Twitch channel which players can perform Fuser mixes in front of viewers.

[3] Harmonix had announced a publishing deal through NCSoft in August 2018 for a rhythm game for personal computers and consoles.

[6] Sussman said that Fuser was a continued evolution of their music games in how they have looked at player agency.