Space Invaders Defence

This is cool remake of classic space invaders game with a defense game style where you must protect the orb for as long as you can. Use "W", "A", "S", "D" KEYS or ARROW KEYS to move. Use YOUR MOUSE to aim and click LEFT MOUSE BUTTON to shoot. Move into a powerup to activate it, you can have 3 active powerups at a time. Good luck!