For the oldies but goodies in my list:

- Any one of the 194_ games

- Legend of Zelda: A Link To The Past

- Super Mario World

- Final Fantasy VI, VII, IX

- Chrono Trigger (agree)

- Street Fighter 2 Championship Edition

- Metal Gear Solid 1-3, MGS: Peace Walker

But I think there's been good stuff since.

- The Super Mario Galaxy games

- Super Monkey Ball

- MGS4, MGS5

- Witcher 3

- The Bioshock games

- Minecraft-- probably the game with the most replay value of anything of all time.

I don't know what will stand the test of time. I don't want to play any of these games now, since I've burnt them out, but at some point I'll likely want to play them again...

- Undertale

- Bravely Default

- The Octopath games

- Dispatch

- AstroBot

- Clair Obscur