just 1 is impossible, so don't count, but i played so much so here is my quintessence of gaming:
Castlevania Symphony of the Night
Super Metroid
Demon's Crest
The Legend of Zelda Majoras Mask
Street Fighter Alpha 3
Fallout 4
Hyper Light Drifter
Ori
Final Fantasy VII
Super Mario All Stars
Megaman X
Shadow of the Colossus
SSX 3
haven't played it very far, but FEZ could also be one of them
oh yes Heart of Darkness also, incredible masterpiece.
edit: well there are many more, FF VI, TLOZ:ALTP,OOT but I tried to focus on my die hard favorites.