My list is pretty short.
- Adventures of Lolo
- California Games
- Dragon Warrior
- Gargoyle's Quest 2
- Kirby's Adventure
- Monster Party
- Super Mario Bros.
- Track and Field
I may have beaten the other Lolos as well. I got to the last boss on Toki a couple times. I've beaten the Game Boy Advance versions of Super Mario Bros. 2 and 3, but I think the checkpoint/save system in those games made it much easier. Beaten Mega Man 3 as a kid, using cheat codes, so I don't count that.