Galaxy Annihilation is a shoot'em up where we need to protect the planet earth from an impending alien attack. Game features: – 3 difficulties (easy, normal, hard) – 31 missions. – 4 worlds. – 15 ships. – 12 weapons. – 13 powerups. – many permanent upgrades to unlock. – 26 different enemies. – 8 boss. – 14 achievements to unlock. and much more… Controls: WASD or arrow keys – to move the spaceships. left-click or spacebar – to shoot with the primary weapon. right-click or E – to shoot with secondary weapon. middle-mouse button or Q – to use the special.