Metal Mayhem

-HOW TO PLAY- You move with WASD or the arrow keys. You have to shoot the robots with your harpoon before they reach the island that you're stranded on. You aim by using the mouse, and fire with left click. After every wave, you get a random upgrade. -STORY- You're stranded on an island while the planet gets invaded by robots. You are the last human left, and you have to keep the human race from  …