Pretty fun concept, I also love that there are online leaderboards for it! I'm not sure if I understood the idea of the scoring system that well, because I tried focusing on one color and maximizing the multiplier but that gave me a score that's *way worse* than just letting it rip and destroying everything. Would be nice if multipliers were exponential to encourage being more careful.
Also it wasn't obvious that the rules page had a 2nd page, the button wasn't super visible. I then ignored the rules and ran straight to grey exploding rooms and got 600k. The idea is super neat but unfortunately it's not very balanced. Great game considering the time though!