Devil World is simple and gets undue hype because it's the only Miyamoto title never to be released in the US, but it's worth checking out, for sure. Zelda 2 FDS is worth checking out because the leveling up system is entirely different, but otherwise, the NES version is a major upgrade. Astro Robo Sasa, Moai Kun, and Door Door are quality puzzles games that made it over here, and the Lolo games (some of which are named Eggerland) have different puzzles, and there are a lot more Lode Runner games, too. If you're into sports games, the original Tecmo Bowl had an updated roster for its Famicom release, the Famista series is RBI Baseball, just with rosters and teams from '80s-era NPB. Other Famicom/FDS titles I'd recommend are Ai Senshi Nicol, Bio Miracle Bokuette Upa, The Goonies, Esper Dream 1 and 2, Getsu Fuu Ma Den, Gimmick!, and Uforia.