At very least after the intro the game perfectly looks, sounds and controls like a NES game, you really nailed it. And it looks great too. Although I think the switch mechanic helps a bit I can't say I can do much better than bruteforcing my way to victory, which is sort of fine as I tend to enjoy bruteforcing anyway.
It would be cool to be able to skip the intro when you replay the game.
Very cool game.