Plot of the decade

Post your favourite story-driven titles of the decade here. If enough people respond, I'll try to make it a poll of some sort.
 
Keep in mind that the question is purely about plot, so characters shouldn't be considered while picking the title.
 
My personal favorite is Persona 4.
 
EDIT:Seems like I totally forgot about PHOENIX FUCKING WRIGHT
These games have such an awesome story...

The Half-Life 2 story arc is incredibly interesting to me. No other game has gotten close to catching me like that series. I just want to know so much about the characters and what's going to happen next.

Mass Effect.
 
Make the trilogy a movie and Star Wars can finally retire.

Metal Gear Solid

Red dead redemption or maybe Mass effect, I'm not really sure.

I agree with Metal Gear Solid.

Probably Metal Gear Solid, but Mass Effect deserves much credit as well^^

Um... sort of weird to bring in an Indy game into this but Braid... especially when you make the link to the nuclear bomb.  Bioshock probably deserves an honorable mention...  Kotor would probably get best twist? Warcraft 3 best plot unraveling? 
 
Mass Effect DOES NOT deserve to be mentioned... i mean someone explain to me what the mass effect 2 plot is. Shephard dies, Illusive man brings him to life to stop the reapers, humans disappear, it turns out they were disappearing because they were needed to build a reaper. Also 99 per cent of the game was just picking up up characters, and then going on to do their individual story missions. Those are good, but i would not have them in "plot" as they are side missions. 

None? Maybe the Silent Hill games? I'm too tired to be answering this right now, might return with a more thought out response tomorrow.

I'd like to add Silent Hill 2!^^

For the entire decade? Probably Call of Duty.

I really enjoy the universe created for Mass Effect, but I have to say nothing is intriguing me more right now than the storyline in the Assassin's Creed series.  It's going in directions I never would have expected.

Gotta go with Mass Effect 1.  so excellent.

Metal Gear Solid.

Probably an unpopular choice, but I really enjoyed the Halo story for the series (though I didn't play all of Halo 2). Also really liked Uncharted 2, which I just finished today, though that may be on the strength of it's characters more than the actual plot. Metal Gear Solid is a good choice. I loved me the story of Eternal Darkness. Lovecraftian-esque horror stuff really tickles my fancy. Mass Effect 1 was grand, Modern Warfare was thrilling, Red Dead Redemption made lots of emotions kick up, and despite how angsty and bizarre it was, TWEWY's plot was really touching. Really, there's too many choice for me to choose one as my favourite.

Assassin's creed

" Metal Gear Solid "

" @FancySoapsMan said:

" Metal Gear Solid "

"

Mass Effect as a series. 

Deus Ex. Easily for me.

Fucking huge Mass Effect spoilers above, watch out.

Bejeweled 2 
 
That, or, I'd say that the Half-Life series has had the most compelling story of any game I've played, although the reason why has more to do with the pacing and the brilliant atmosphere that series crafts than it does with mere plot points.

Which decade? the 2010's, the 2000's or the past decade? I'll just go with Red Dead Redemption because I fucking loved it's story. 

KOTOR
Mass Effect 1&2
Dragon Age
Alpha Protocol
Persona 3
Heavy Rain
Half Life 2

I love Mass Effect, the Shepard story is great, and the universe that bioware establishes is absolutely amazing and detailed.

oh god. So many defining games :X I mean your talking ps2 and xbox 360 era. damn.
Though I will say ps2 felt like it has more truly story driven games than 360. 360 to me while I love it alot feels
more like a micheal bay like machine (constant explosions, not much depth) while ps2 was more like  Akira Kurosawa  with some 
Quentin Tarantino thrown in from some of the over the top games like god hand.
 
I just cant pick though im indecisive as it is and with so many defining games this decade I couldnt give an honest answer.

Anything Obsidian, especially Alpha Protocol or KOTOR2 (shame about the ending), Nier is a really strong one (if only because the way it uses new game plus to make you feel like an absolute shithead), SMT: Devil Survivor.

" The Half-Life 2 story arc is incredibly interesting to me. No other game has gotten close to catching me like that series. I just want to know so much about the characters and what's going to happen next. "

Assassin's Creed

Half-Life 2 + Episodes 
 
Also, Mass Effects. 

" Um... sort of weird to bring in an Indy game into this but Braid... especially when you make the link to the nuclear bomb.  Bioshock probably deserves an honorable mention...  Kotor would probably get best twist? Warcraft 3 best plot unraveling? 

SPOILER WARNING: Click here to reveal hidden content.

Mass Effect DOES NOT deserve to be mentioned... i mean someone explain to me what the mass effect 2 plot is. Shephard dies, Illusive man brings him to life to stop the reapers, humans disappear, it turns out they were disappearing because they were needed to build a reaper. Also 99 per cent of the game was just picking up up characters, and then going on to do their individual story missions. Those are good, but i would not have them in "plot" as they are side missions.

"

Shadow of the Colossus had an amazing story.

Mother 3 has the best story I have ever seen so that hands down.