Alien invasion has begun! You control the last platoon of soldiers that have survived the onslaught! Protect your bases over 5 stages across the USA! Once all the bases are destroyed the aliens will control everything! Each stage consists of 4 waves of aliens, each wave stronger than the last. At the end of each stage there is a terrible alien monster to defeat!
Each time you kill an alien gold coins or ammo are left behind for you to collect! Use the gold to buy extra soldiers or upgrades!