Neat idea! It took me a bit to understand what I was doing and took a couple hits initially, It might benefit from a tutorial or instruction page. Once I understood it though it was fun and pretty unique. It's cool that the colors seem to change every time you reload the game. My only feedback would be to ramp the difficulty sooner to keep play sessions shorter, It takes a very long time before you start seeing the new enemy variants. Oh and the music only seemed to be playing in one of my ears? Wasn't sure if that was intentional or a bug, or an issue on my end lol.