If you could be the best in the world at ONE game...

Marvel vs Capcom 2, but only without using a team with any two of these people: Storm, Sentinel, Magneto, Cable or Spiral on it.  I don't want the genie to make me the best with a team solely composed of game-breakingly overpowered characters. 
 
Kinda not sure if I'd want to be the best.  I'd settle for great because I still want a challenge.  If I can instapwn everyone I'd probably stop playing it.

" Marvel vs Capcom 2, but only without using a team with Storm, Sentinel, Cable or Spiral on it.  I don't want the genie to make me the best with a team solely composed of game-breakingly overpowered characters. "

" Dead or Alive 4. i'm pretty damn good but why not be the best? everyone would fear me and plus i could get those awful achievements.  "

Ninja Gaiden (NES)

Skate 3

donkey kong

pop n music just cause then i would be a complete bad ass.

For the lol's: Heavy Rain 
For the cash: Starcraft 2 
For the tragedy: WoW

Hello Kitty Island Adventure

I'd say either Tekken 6 or Super Smash Bros. Brawl.

BATTLE TOADS

CS.

Dawn of War 2.

Noby Noby Boy.

Geometry Wars 2.

Tetris.

Pac Man C.E. 
 
or  
 
SSFT2HDR

My answer would have probably been Halo 2. Oh God, less than one month remaining!

Starcraft, cause it'd prob pay the best.

" Starcraft, cause it'd prob pay the best. "

COD so I could make monezzzzzz.

Life 
 
Cause everyone knows its just a big, dumb game

SC2. I bet there's a lot of money in it later.

SSFiv

Ignoring the easy answers of Starcraft and Starcraft 2, I'd probably go with Counter-Strike 1.6.
 
Why? I suck at Counter-Strike.

Peggle. Then I would win all of those Peggle tournaments and retire a Peggle master.

Halo, becuase Halo is an art when played correctly and it's fun to watch someone play good Halo. I do consider myslef pretty good, but it's an on off thing.

Hmm, some interesting answers. The most common being Starcraft, heh, no surprise there.
 
For my answer...hmm. I don't know. My first answer was DDR, but, I don't know. Starcraft or Starcraft II would be a good choice, for obvious reasons. But I like the idea of being the best at CSS. Or TF2. But it would be cool to be the best at a fighting game, also. Like SSFIV, maybe? But...it would be more fun to be the best at a game that's visually exciting, just to show off. Like Devil May Cry 3 or Ninja Gaiden. Gah, I'm so indecisive...

Prob SC2 so i could rate in the money from the tourney scene.

CS:S

League of Legends, I guess. That, or DDR...

I'd have to say Ghost 'n Goblins. I've never beaten that game and I will always say that anyone that claims to have beaten that game is lying. I know a guy named Aaron. He made the mistake of claiming that he had beaten that game. I told him, "No you didn't." Also, I was correct.
 
So yeah, Ghost 'n Goblins.

Chess.

Halo CE

The lottery.
 
Even just winning it once would be enough for me :D

marvel vs. capcom 2, and by extension just about every other fighting game

Dance Dance Revolution, so I could pick up the hot chicks.

Chess.

" Dance Dance Revolution, so I could pick up the hot chicks. "

Company of Heroes.

Virtua Fighter. 

Starcraft, so I can dominate the Koreans.