Hit enemy ships with your photon beam to refill your steadily depleting energy. Energy drops constantly over time, and when you fire the beam. Beware enemy beams. They destroy your ship and cost you energy to reform. How long can you last? Earn the highest score you can by shooting as many enemies as possible before your energy runs out. Controls: Click green flag to start/restart game Arrow Keys to move ship Space Bar to fire photon cannon Sprites from: http://lostgarden.com/2007/04/free-game-graphics-tyrian-ships-and.html
