Everything you've been afraid of is come to reality! Be ready for alien intrusion! Clean out the base by hook or by crook! Your way will be laid through offices, storehouses and secret labs! Choose your own mode of playng whether it's campaign or survival with 2 players. Boring humananity rescue has passed! Now you have innovative greatly destructive weapons and 9 levels to het through! Realize the last hope of the mankind in Alien Shooter!