Would be cool to have an edit option on my post(s), but anyway...
I realized I haven't given any honorable mentions yet, so even though I still think Super Mario World is hands down my favorite, here are a "few" others, in no particular order...
Super Mario Bros. 1, 2, and 3 (NES, SNES [All-Stars 2 and 3 only, didn't care for some of the changes they did to the game mechanics in SMB1 for the All-Stars remake])
Tetris 1 and 2 (NES)
Minecraft (We all knew it would eventually end up being mentioned)
Portal 1 and 2
RollerCoaster Tycoon 1 and 2
Planet Coaster (I have the Alpha version, and cannot wait for the full game to be released!
The Sims 2 and 3 (4 gets a semi-honorable mention. If they kept the open world of TS3, it would get a full mention.)
You Don't Know Jack! (Original PC series. Hated the remake in the early 2010's.)
Legend of Zelda (original, Wind Waker, A Link to the Past, Ocarina of Time, Zelda II [it was a bit different, and got a bit of backlash from Zelda fans, but I like it myself)
Wolfenstein 3D
Doom (original series)
Sonic the Hedgehog 1, 2, 3, Sonic & Knuckles
Faxanadu (NES)
Adventures of Lolo 1, 2, 3 (NES)
Maniac Mansion (NES)
Paper Mario 1, 2
Super Mario Kart (Mario Kart 64 goes here as well)
Cities: Skylines