This is a really good idea for a thread!
For me, I'd say for Sega Mega Drive/Genesis:
Sonic 2, Aladdin, Lion King, Story of Thor/Beyond Oasis Robocop vs Terminator lmao, B.O.B.,
But more so N64 especially these games too:
Super Mario 64, Pokemon Stadium and thus Yellow and Silver, Zelda Ocarina of Time and Majoras Mask, Donkey Kong 64, Jet Force Gemini, Diddy Kong Racing, Mario Kart 64, F-Zero X, Super Smash Bros 64 and whatever else lmao.
My all time favourites especially from here though are Story Of Thor, Aladdin, Super Mario 64, Zelda OOT, Jet Force Gemini and Diddy Kong Racing.
Zelda OOT and Super Mario 64 really influenced me a lot and made me dream of being a game designer and trying to study to become one for years too.
I forgot to mention Sonic R, Goldeneye 64, Worms Armaggedon/World Party too lmao. I LOVED Goldeneye 64 and I met the level designer for it, who was my idol! He ended up being one of my university teachers by "coincidence" too!