WASD to move, Space or LMB to fire and the spaceship looks towards your mouse-pointer! Your Ammunition is how many bullets you have left. Defeating an enemy gives you anywhere between 300 and 600 points! Enjoy! My high score is 64,838. Try beating it, and let me know!
I used some techniques mentioned in griffpatch's space shooter youtube series. The background music is from the space shooter starter pack.