Monster Invade

You control a lone character in the center of the map. Using the keyboard to move and the mouse to aim, your immediate goal is to survive the encroaching waves. You shoot the monsters as they approach, and different weapons sometimes appear for you to collect. The pace is constant, with little respite as new enemies spawn. The challenge comes from managing the space around you, trying to keep a buffer as the crowd thickens. It feels like holding a position against a slow, inevitable tide.