Risk of Rain 2 and Robo Quest are probably up your ally because you like Ultra kill
But if you want to diversify genre, here are some that I would recommend
- Card Games - Slay the Spire (Its like a card game and rogue like combined)
- Rogue Like - Hades is currently one of the top tiers in rogue like dungeon crawler
- RPG - Baldurs Gate 3, even if you end up finishing the game, how you ended up finishing it is what makes it so replayable. Each character has their own stories for you to uncover. Larian’s other gem is Divinity Original Sin 2 too
- Sandbox Games - Minecraft of Terraria
- Arcade - Most arcade games are highly replayable because thats their whole selling point. Currently I am back to playing Temptest 4000
- Hack n Slash - Grimdawn, nuff said
Linux always had software that has anti-cheat. First one I can think off that is both a native Linux application and has anti-cheat is Tibia. Aside from that are Valve games. I am sure there are plenty of others too aside from those that opened up through Proton/Wine.
What we don’t have is kernel level anti-cheat and honestly I would rather stay away from games that deploy it than allow such software running in my computer.