I still have all my old systems. (Except maybe my original Game Boy...not sure what ever happened to that.) And I probably have more NES games than games for any other console. They include:

Final Fantasy
Super Mario Bros. (1+Duck Hunt, 2, 3)
Yoshi
The Legend of Zelda (1, 2)
Teenage Mutant Ninja Turtles (1, 2, 3)
Mega Man (2, 3, 4, 5, 6)
Metroid
Kirby's Adventure
Batman
Adventure Island
Muppet Adventure
Quattro Adventure
Tetris
Ultima IV: Quest of the Avatar

I also have a Super Nintendo with two games (Super Mario World and Super Metroid) that I bought at a pawn shop in like 2006, and a Sega Genesis with all the Sonic games and not much else worth talking about in public.