The idea is awesome! I would love to know better how the scoring works, it seems like adjacent gives bonus. A scoring bonus key would be helpful. I was actually having fun trying to chain so I had 0s popping back to back. Really cool game mechanic, felt like I could be expressive and hectic!
Super great for a first jam game! My only feedback is to make the how to play show up the first time a player clicks play, people (me) generally never click the how to play.