Either Pac-Man, or some Gameboy Color game I can't recall right now, I think it was Toy Story for the Gameboy Colour. Matter of fact, I'm going to get it again for the feels.
Super Mario Bros on the Super Nintendo, but I think I'd have to say Yoshi's Island or Tetris attack may have been it... Been a loooong time since I've recalled them. XD
A lot of these were real good. Can't say I've had the pleasure of playing on an NES though it was made before I was born. I had a retro videogame binge the other day busting out my sega, n64, and ps1 though haha.
Pitfall maybe.