Bullet On The Wall
This is a new game I made. 
It’s a nice little minigame to play when you’re bored. Your goal is to survive as many walls as you can. There are also highscores ^^
Download on http://bit.ly/1tXba9E
Nice little game. Im not sure if its a feature or a bug, but when I move forward and shoot, and stack bullets they always bounce off the walls.
I dont know if the game does this, but maybe speed everything up as you get farther in?
It is a feature 
When you shoot bullets when a wall is still shrinking, the bullet will shoot back This is to prevent bullet spam a little
And no, the speed doesn’t get higher. Altough it is a good idea. The only thing that affects speed is the difficulty.