Use the mouse to aim and SPACE to shoot. Try to prevent the aliens from reaching your castle doors. Some aliens are tougher and some are weaker. At the end of every wave use your score to buy upgrades. There are 10 waves with a boss on 10. After wave 10 it goes into survival mode where you cant upgrade or repair so see how long you can survive.
This was made by me, snakey265. If you like it please love-it!
