this is quite polished! could see myself getting addicted if there was a little more (sounds mostly, but more upgrades and even changing things to like 4n+1 or 3n-1 things like that)
I actually wanted to change the rules mid-run, but I did some research and all the other rules I have found either explode to infinity or produce numbers way smaller than the 3n + 1 rule. Thanks for playing!
