Jet Set Radio Future Multiplayer (JSRFMP) is a fan made game based on the multiplayer mode of JSRF. JSRFMP is NOT a mod for JSRF! JSRFMP is a fan made remake from the ground up. This also means that it is a free standalone game, and you do not need to own JSRF to play it.
Why You NEED to Play Jet Set Radio Future Multiplayer NOW
Here are some screenshots of a multiplayer event (september 2021).