Earth is in danger! Our home planet is attacked by an army of invaders. Everyone is panicking, there is no hope of surviving this war. However, you can save the mankind if you try hard enough! Prepare for some extensive shooting as you walk through various locations filled with creepy extraterrestrials. They’ll be attacking you in waves and you can never know when and where you are going to run into another ugly creature. Shoot your gun non-stop and don’t step back until every last of them is dead!