Your only goal here is to shoot little blighters and don't let them fall into the abyss. Move your mouse to point the cursor on the blighter and shoot him before he falls off the screen.
Are you ready to play one very exciting, but demanding game? These little blighters want to break through your defence and fall into the abyss, but you won't let them pass that easily. Grab your gun and watch the aim to shoot your targets one by one. Complete the current level and see if you can handle the increased amount of creatures!