hi jgordon510, this is a good game if you just want to waste time.and is fun to play.
but if I could give some suggestions for improvement the would be:
- is to increase the bullet speed and amount of bullets shot.
- to reduce the amount of time take from a score of 10 to a score of 5 for the difficulty increase, as I had to wait 2 minutes for the score to reach 10 and for more zombies to spawn.
that's it,it's a short list because it is fun to play and just waste your time on. My high score was 110.