I haven't played as much video games as I should (changing that soon!) but here are the ones that I've loved the most so far.
Super Mario Galaxy I absolutely love this game, and I'm almost finished with it (just one more to go!). I have the second version as well, but nothing will ever top this first one. The first time I played this game was about 8 years ago!
Majora's Mask 3D The first and only Zelda game I have so far (I know, I suck). It gave me such a good perspective on Zelda games though, and I'm planning to buy another Zelda game after I have finished playing this one!
MySims Kingdom This is a very weird choice but I love this game so much, I think half of it is because of the nostalgia. I purchased this game 10 years ago and I remember loving it so much! I played it recently and IDK I think it's really cool.
I definitely have a fixed list haha so i'm glad you asked! I have so many games so i'm only going to say the top 3, in order of favourite of all time:
Final Fantasy 7 This game hasn't aged greatly but it's a massive part of my childhood. That moment when you finally get to the world map and you're like, HOW BIG IS THIS GAME?! The story is great, the characters are great, the side quests are aplenty Can't wait for the remake.
Paper Mario 2: TTYD I loved the art style at the time and i've recently downloaded it on the dolphin emulator with a HD texture pack and it looks insane! There's so many sidequests and hidden characters, the story is funny and there's SO much to do and find.
Animal Crossing Gamecube I don't think this needs to be explained =3, but i will say the reason I love the gamecube one the most is because it had the biggest town, unique top down view (acres), 15 villagers and really great events. It's another massive part of my youth.