Note: This game doesn't have an optimal playing experience on Windows 10. More info. The universe is under attack and it's up to you to liberate the planets. Feel the adrenaline as you fend off hordes of cyborgs, motherships and deadly bosses. Challenge your reflexes by dodging incoming fire and diving enemies. The skies will explode with your power. This action-packed, addictive game brings classic arcade-style gameplay to today, and beyond.