A friend is doing it
And it is very interesting
Same challenge as coding a terminal game
actually more eye candy.
and litteraly you imagined games on that console when it was THE thing

6502 is not a scary language
asm is fun
you have the best 8bits synthetizer
you have cool 256*220 64 colors
you have arrow + two button + start select
you have two player
and nes is emulable with a 486

You can crank the nes to its limit.