I have the utmost admiration for people that make games on original hardware, and the NES is going really back. Hats off and godspeed, my friend.
It has to be 100% imposter syndrome, that damned reverse Dunning-Kuger, because I can't even imagine how anyone would not think this is a fully professional AA game, then I remember I'm constantly seeing the faults and cut corners in my own game that nobody else can see.
There's a story that Justin Ma (one of the two developers of FTL) told that kind of illustrates this. The FTL effect itself (the ship jumping to another sector, which in-game is shown by the camera zooming out and the ship disappearing while a sound effect plays) was originally a placeholder meant to be replaced with the final effect. But it was never, ever mentioned by playtesters as something that needed to be changed (if you've played the game, you know what I mean), so it never was. The moral of the story is that it's a good idea to give the game to other people and let them guide you on the aspects that need polish, because we're too close to the trees and their cogs and levers to see the forest.
This is super cool and already something that your game has over KIngdom Hears games! They don't have the characters changing on every wold (just some of them), and they never show the change in real time.
For the HTML version, are settings lost every time you reload it? That might be an issue if you have to reconfigure the controls every time.
BTW, another thing I didn't mention: Enter goes into the options menu, but then resets the game once you exit. I'm not sure if this is intentional, but it's a bit of a newbie trap if you do it in the middle of a game...
