Single-Player 
Co-op Sanctum is a 3D first-person shooter featuring elements from the tower-defense genre.
Business Model: Buy-to-Play
Microtransactions: Yes, there are optional in-game purchases available.
Key Features:
Putting Up Walls: Build out mazes with tight corridors to trap your enemies in for easy pickings!
A Fight for Survival: Grab up to three other people and work together to protect your core from waves of unrelenting creeps.
Under the Iceberg: Master the mechanics and dive even deeper to earn achievements and uncover fun secrets.
