Warhammer 40,000: Space Marine 2 is seemingly designed with co-op at the forefront, especially in its Operations game mode. When a mission is selected, the game automatically starts looking for two more players to fill in the squad, and each person must use a different Space Marine class. Even the main campaign is fully playable in co-op, with friends taking control of brothers Gadriel and Chairon. Even in Operations, though, sometimes it’s nice to cut through the Xenos hordes playing solo, without worrying about coordinating with others.