The Core: Protocol

Co-op horde shooter

The Core: Protocol is a co-op horde shooter for PC that combines tower defense with trap building. You fight through a maze, using traps and defenses as waves of enemies come at you.

Runs and upgrades

The maze is procedural: its biomes, cabins and weather are reshuffled every run. You collect permanent upgrades for the hub, then return to a maze where those surroundings have changed. The game also has walls with something waiting beyond them.