I enjoyed the easy controls and the choice to upgrade either health or damage each level. I wish that there were different types of enemies with different health and different speed; that might help make the gameplay more challenging, forcing the player to choose which robots to focus. I had some technical problems with the game window; I have a super-widescreen monitor, so I was unable to see the bottom lane, so I had to blindly shoot down there every once in a while to make sure I didn't lose. But other than that, it was a fun game! Thanks for making this!