The order is not really set in stone, but:
1. Minecraft
2. Legend of Zelda Breath of the Wild
3. Halo 3
4. Super Mario Odyssey
5. Halo 4
6. Super Mario Galaxy
7. Hollow knight
8. Super Smash Bros Ultimate
9. Star Wars Battlefront
10. Star Wars Jedi: Fallen Order
Honorable mentions: Gang beasts, super mario sunshine, mario kart 8, Star Wars battlefront, used to love Fortnite and overwatch as well.
Unfortunately, most of the 'zoo games' I've played were when I was much younger and on mobile, so they ranged from quite good to quite bad, mostly just mobile free versions of zoo tycoon. I don't really have the computing power to run planet zoo which is a shame, modded that could easily be one of my favorite games of all time. Minecraft would be there at #1 on its own, but the fact that I could make a modded zoo in it elevates it to the next level. There is a reason the game is on almost everyone's top ten list.
Theres an ever-growing list of games I want to finish, let alone new ones I want to play. Unfortunately, I've found I have ever dwindling time to play games with classes and other hobbies like wildlife watching.