How co-op works
Up to four online players first build tower mazes, then fight inside the same lanes as first-person shooters. Teams coordinate pathing, tower coverage, upgrades, and weapon fire so constructed defenses and direct damage stop every attacking wave.
About this game
Sanctum fuses tower defense strategy with first-person shooting, asking you to design intricate mazes of towers before the enemy waves arrive, then grab your weapon and fight alongside your structures. It plays as true co-op, letting you and your teammates share the full planning and combat load against increasingly dangerous alien swarms.
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You spend the build phase placing towers to funnel and destroy incoming enemies, balancing limited resources across weapon types, upgrades, and maze layouts. Once the wave begins, you switch to FPS mode, wielding rifles and abilities to cover weak points, finish stragglers, and adapt when your defenses crack. The hybrid loop rewards smart tower placement and sharp aim in equal measure.
Cross-platform multiplayer support means you can defend with friends on Windows or Mac, coordinating maze routes and assigning defensive roles as the pressure mounts. Sessions thrive on communication-heavy teamwork, especially when waves break through and you need to plug gaps together in real time.
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Co-op shooters built around surviving relentless waves of enemies, where teamwork, positioning, and escalating firepower make the difference between victory and being overrun.
Build defenses, manage resources, and survive waves together in cooperative tower defense games that reward teamwork and strategic coordination.
Frequently Asked Questions
How does the co-op work in Sanctum?
Sanctum supports full co-op play with cross-platform multiplayer between Windows and Mac. You and your teammates work together during the build phase to place towers and design mazes, then fight side-by-side in first-person shooter mode when the waves start. It's communication-heavy teamwork-you'll need to coordinate tower placement, cover weak points, and help each other when defenses break down.
Do I need to be good at both tower defense and FPS to enjoy this game?
Sanctum rewards both smart tower placement and solid shooting skills, but co-op helps balance the load. If you're stronger at strategy, focus on maze design and tower placement during the build phase. If you prefer action, you can concentrate on finishing off enemies your towers weaken. The hybrid loop works best when you contribute to both, but teammates can cover each other's weak spots.
Can I play with friends who have different skill levels?
Yes, the hybrid FPS-tower defense design actually helps mixed-skill groups. Experienced players can tackle complex maze layouts and prioritize tough enemies, while newer players can focus on simpler tower placements or covering specific lanes. The communication-heavy teamwork means you can assign roles based on everyone's comfort level, and the real-time shooting phase lets skilled players help carry the team when defenses get overwhelmed.