It's a hero defense PvE arena with MOBA-style controls and mechanics. It has a satisfying loop and fun hero co-op synergies, and there's really not much else like it.

Cooperative stress simulator. It's easy to make mistakes that put great burden on your co-op partner(s). Will test your resolve. It's fun until it really isn't.

One of the best RTS games ever made, only made better coordinating tactics with friends. High focus on fewer, more tactical units with light base-building.

Marvelous 4-player co-op hero tower defense with deep strategy and loot/equipment system.

Greatly enjoyed our time playing this on our private dedicated server, though we should've scaled difficulty earlier on. More depth and quality than expected.

4-player co-op. Features an unrestricted skill system, fluid and challenging combat, and an engaging story.

Co-op (resource-limited player count). PvE factory and logistics automation.

4-player co-op. Left 4 Dead style wave defense action melee/shooter.

4-player co-op. PvE survival with enemies and digging.

4-player co-op. High cooperative potential; focused on progression of research tree, utilizing machines, and managing power grid. Sandbox PvE without enemies.