Plain physics is the key thing in this game. You need to survive 100 zombies while i find the movement challenging.
Step into a large map where zombies roam, click to start and move to survive.
Use W, A, S, D to move, left click to shoot, right click to aim, and press R to reload. The objective is to kill 100 zombies to win.
Most helpful is strafing side to side while you move constantly. Press R to reload fast in a pinch.
Q: What are the controls? A: WASD to move, left click to shoot, right click to aim, R to reload.
Q: What is the objective? A: Kill 100 zombies to win.
Q: Is there a timer? A: Not stated.
Q: What is the main mechanic? A: Survive by shooting zombies.