For me it's The Legend of Zelda: Ocarina of Time. At the beginning I've played it 17 hours straight. After only a few hours of sleep, I was back for more, and I couldn't stop until I've finished the game. Then, I've started over again to find all the secrets. Also, Super Mario 64 cause no game yet has had this kind of crystal clear 3D graphics, remarkable texture mapping, absence of pixilation. Regarding Nintendo 64 those are the games that I like the most. Lately I've found something similar to those games by reading an article named win money playing games. Bananatic was the app that I've started using, it shows you games that you are supposed to download and after playing reviewing them in exchange to rewards, that could be money either gift cards, more you can find out on the article above. It was a pleasure to use this app, definitely recommend it.