My favorite type of game or my most consistently played type of game is FPS; though my favorite game that I currently play is a MOBA (League of Legends). FPS games are my favorite because there generally isn't too much variation between what needs to be done in order to play them. The difference in FPS games generally comes from the aiming system, recoil of the weapon, and crosshairs generally. Things like overwatch are kind of an exception to this since they have skills that can also be used in conjunction with your weapons, and even weapons that aren't general military grade (M4, M16, AK-47, etc).