1. Battletoads every level was essentially a new experience and it had great graphics and music and played very well
2. Legend of Zelda, fun to replay today and still the best zelda game as far as zelda goes Imo, by that I mean it is open world more so than any other zelda game
3. Super Mario 3, great music and just fun game overall, great controls and great levels
4. Megaman 2, great controls, fun quick game, music is great, sprites look cool
5. FINAL FANTASY 3 OR 1, yes 3 wasn't released outside of Japam but it was still an amazing game especially for its time it was huge. FF1 doesn't need explanations.
6. Castlevania, fun game with cool bosses and challenging levels!