Aliens have invaded the cosmos and are wreaking havoc on all peaceful planets in the federation. You are the armada's last hope! You are one of the greatest pilots in the intergalactic armada. Use your arrows or mouse to move then use your X and Z keys to fire and your space bar to jump or change turrets. How far can you go and stay alive? Can you save the federation? Have a great time defending the federation when you play Graviton X!