Obvious Dwarf Fortress/Rimworld, Minecraft/Vintage Story, Binding of Isaac.
Underrail, long ass RPG and some people do multiple runs.
Barotrauma, chaotic submarine simulator, multiplayer, has clowns.
Noita, overpowered wizard simulator, that is if you're good enough.
Towerclimb, a challenge.
Ostranauts, disassemble spaceships and beat your meat with a katana