Mine is vehicle building games like Stormworks or Scrap Mechanic. It’s so much fun to shoot at your friends with your latest nuclear drone while hiding in your bunker with a better defence system than Area 51 !
I’m very curious about your fav niche game genre !
(I’m sorry for my bad English ^^')
First person tile based dungeon crawlers! Like SMT I and II, or the Labyrinth of Refrain games! The less map and info, the better, so I can get full immersion in exploring and getting lost in a dungeon for days!