GUNROX: Zombie Encounter

You control a lone survivor in a confined area. Movement is handled with the W, A, S, and D keys, letting you strafe and backpedal to avoid the shambling enemies. Your main goal is to survive each wave, clearing out every zombie before the next group appears. You click the left mouse button to fire your weapon, starting with a basic pistol. Collecting cash from fallen zombies lets you buy upgrades between rounds, like better guns or more ammunition. The pacing is relentless; the zombies come from all sides, and letting them get too close means a quick end. It feels tense and immediate, a test of your positioning and aim under constant pressure.