Honestly, I've given so many NES games a chance but almost all of them are either boring, unreasonably difficult or cryptic as fuck.
Even 1st party titles are pretty bad. Zelda 1 for example is literally bootleg-tier.
i'm not hating on the NES for its technical limitations because the gameboy has an infinitely more interesting library despite being more primitive. at least it has exciting stuff for it going on like pokemon.