The earth has become inhospitable, so humans have created an Ark to travel through space and find a new home. You have been sent with a small contingent to scout ahead and find a suitable planet. Unfortunately, an alien invasion begins before the Ark gets there. Your mission in this online game is to hold out from 30 waves and protect your new home. Use YOUR MOUSE to move your character. Click LEFT MOUSE BUTTON to shoot. Use "R" KEY to reload your weapon. Press "C" KEY to switch your weapon. Click the outpost to get inside, press SPACEBAR to eject. Use WASD KEYS to scroll the map. Go through tutorial at the start of a new game! You can press ESC in game to see all controls and review the basics. Good luck!