Honestly, if this was just an RTS, it would keep you busy enough, but Sins 2 is also a 4X. So as well as conducting your various wars, you've got trading vessels, a galactic marketplace, diplomacy ...
Project Citadel is a single-player real-time strategy roguelike aiming for an endlessly replayable campaign comprised of easily digestible five-minute gameplay chunks. Last Keep says Citadel has "long ...