Sanctum 2 is a sequel 2009's Sanctum, a hybrid FPS/Tower Defense game. To succeed you have to construct and upgrade defensive structures. What makes Sanctum unique from other tower defenses is that when the havoc starts, you jump right into the action with your own weapons and play a key role in the defense.
This page contains co-op info for Sanctum 2 on the PC. All information about Sanctum 2 was correct at the time of posting. Information is subject to change. If you see any errors please email us.