Half Life 2, Resident Evil 4 or Diablo 2. Hard decision. I'll go with Half Life 2. WOW would be a good candidate too, I've never played it though, so I can't say.
Quite a difficult question to answer as there have been dozens of games that are simply fantastic. There have been numerous games i've loved playing but picking a single one is proving hard. xD
I'd say Diablo 2 from that list XD I played WoW once, it's just like every other MMO except you pay more and get too many serious muppets. Honestly, picking a game out of everything from the last 10 years would be really difficult.
One game out of the who knows how many we've had in the last decade? I dunno. Maybe Half Life 2, maybe Twilight Princess, heck I bet Wii Sports would be tossed up there, but only because everyone and their grandma has a copy of the thing because it comes with the console.
Tetris. ... ... In all honesty, I don't think there should be a "game of the decade". Too many games to choose from. If it was like, "Best shooter of the decade" and "Best RPG of the decade" and etc., then it'd be a little easier to decide. I'm honestly just a big fan of Prince of Persia...>> Yay for PoP.
Best game I've played in the last 10 years huh? Well screw you guys I'm picking a series. For me it's either the MGS or GoW series since they're the only games I've played so much and still bothered to keep. You're such a funny guy.
ugh honestly i would say GoW, SotC and Okami, for now i will say that, since there are alot of good games
No idea in the slightest, but according to the praise of many journalists the list should be pretty damn big.