Ether Cannon game

Game description

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Defend earth from gaseous beasts! Rage your way through 21 levels of non-stop action!

Game controls:
WASD or ARROWS to move. mouse to aim and shoot. M will mute the sounds, but you're crazy if you do.Be sure to stick around at the end for some cinematic goodies. Also, there?s an unlockable Hard Mode if you beat the game. I finished it, so YES, it is possible!