I love this game! It was sooooo much fun. It was unbalanced but that kind of was the fun part for me. I upgraded money gain for a while and then basically upgraded everything so that the enemies where one hit and I could clear the whole screen with one click (on lower waves, they needed some hits on nights above 25 or something). I also realized that the background isn’t infinite (because I leveled speed until the screen got shake when I went far into the distance). At some point I couldn’t earn money though since I got so much that it overflowed and I had a negative value :D It wouldn’t be too difficult to fix all of this but I think it’s even more fun like this! Good job! I really enjoyed this a lot!!!