The Game & Watch is also quite limited in terms of storage (1.1 Mb) so even if you do hack it doesn't seem like it would be able to store an entire NES ROM set.

Released on May 26, 2016 by Bethesda
Developed by Id Software
You are the last defense against these hell-spawned hordes. Prepare for the most intense mutant-laden, blood-splattered action ever!
Same. Playing through two Mario games now. Going...
Probably. Not right away though.
So you'll buy it again? I have it on Wii U and I'm...
Damn, that looks cool. Why do they have to add...
Seems simple enough. š¤£
EASY