This is really cool! On that first night when the screen got pitch black I legit felt spooked. The particle effects rocked and the theming is hilarious, too.
Two things really stuck out to me though. When I got to the upgrades screen, I only found out I could click the flower for money right before the timer ran out because I was just clicking everything trying to figure out how to progress to the next level. Maybe a big text box saying "CLICK THE FLOWER" would help? Additionally, I can't stand spam click mechanics. They hurt my fingers and don't really test skill or provide an entertaining experience. I honestly think it would have worked better if you just got money through kills instead, and maybe could invest it into farms or something. Great work!