Offense of the Aliens (O.o.T.a.) is a an arcade strategy game with an invasion-style theme. Instead of controlling one ship who attempts to take on an entire swarm of aliens in this game you command the swarm of aliens and must blast the enemy ship out of the sky as much as possible! Destroy the planet you are invading and a boss will spawn! Kill the boss to beat the level and progress to the next! You can instruct your swarm of invading aliens to shoot, divebomb, wiggle it's deadly tentacles, and more!