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 ^^')
I’m not sure anyone here would consider medieval combat niche, but I do love me some Chivalry 2
Never played Chivalry, but Bannerlord for me. There isn’t anything quite like it despite the devs over promising. Besides the actual battles the rest of the game really needs mods to feel fleshed out.