Thanks for trying this one, I'm happy you like it.
It's not a NES rom and people who make actual NES games for this jam provide the rest of us a reality check ;), revealing that if we tried to make the same game we made on a NES then the console would realistically struggle a lot without spending thrice the jam timespan on optimization including dumbing down what needs to be. Obviously I'm super glad you think the game feels authentic anyway. ;)