9. Defense Grid 2
Platforms: PC, Xbox One, PS4
Defense Grid 2 is the sequel to Defense Grid, developed by Hidden Path Entertainment (which is responsible for Age of Empires II HD). Like its predecessor, it revolves around defending power cores from marauding aliens who attempt to make off with them. You, the player, take charge of a defense grid on a series of abandoned military bases in order to stop the aforementioned aliens, which seem to be fairly generic.