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.