Well, like most people I suppose, I don't have 'ONE FAVORITE GAME', even so, if someone asks usually the first title that pops into my head is Halo 2. Not just because I think it's a great game, but it actually sparked my interest for shooters. I was a very stubborn kid, a friend made me play it xD. The newest console I had back then was the N64 (talking about 2006).
Anyway, a list!
-Halo 2
-LoZ:Windwaker
-All the gameboy Zeldas
-LoZ:Majora's Mask
-Starcraft
-Pokémon S/G/C
-Half-Life
-Portal 2
-Age of Empires 2
-Homeworld + Cataclysm
-Halo: ODST
- Marathon (this one's really one of my absolute faves, here's a link
http://bungie.wikia.com/wiki/Marathon)
- Borderlands 2
- Darksiders
- Metro 2033
- Bioshock
-Creatures (a breeding/gene manipulating/learning AI game thing.
http://en.wikipedia.org/wiki/Creatures_%28artificial_life_series%29)
-EVE, I've played it for a while and I love it but I suckkk, I had to be a miner, can't handle the stress of getting attacked.
-Dungeon Keeper 2
-Mass Effect 1
I'm sure I left out a lot...
I read someone mentioning Halo : Master Chief collection. I'm going through it right now, and boy does the Halo 2 remake look great! Didn't expect it, after Halo CE anniversary..turns out, the campaign, multiplayer and the cinematics of Halo 2 weren't even remade by 343i so, haha...