Been out awhile on PC, but recently launched on Xbox as well. It’s part of Game Pass so no cost. Basically a melee focused martial arts battle royale with high mobility/parkour.
There is an invite/referral reward system and both sides of the invite get rewards if you play far enough. This code only works for other xbox users though. Just put the code in by clicking ‘Invite Code’ when selecting your username when you first load it up. We both get rewards at every ten levels basically.