Click to select in the menu. Use WASD to move the player. Click to shoot, and press the spacebar to switch weapons. Defeat all the zombies and survive for as long as you can. There are a total of 75 levels. They get harder every level. Feel free to comment your score! It may be pretty laggy now with the new update. Here is the turbowarp link to run it faster - https://turbowarp.org/507775501/fullscreen?
credit to natpat_ONE