Crash and Spyro were huge system sellers.
I'd say overall Metal Gear Solid though. It's a mega-franchie and it really birthed the huge influx of cinematic games. It's always pushed the envelope for quality gameplay, aesthetics, and story telling in the medium.
Woah Apeman dont get ahead of yourself. There were a lot of games that did. Crash, MGS, FF7, and many others. FF7 was good though thats for sure.
how have you never heard of that before
How have I never heard of what?