If you ever a had an option to instantly release ONE game, what would it be?
I woulda taken Hl2 ep3, Portal 2 or Bioshock infinite, hard to decide.
And of cource the game is completed and not a half made game.
The Legend of Zelda: Skyward Sword. Although I hope you consider they are completed and not a half game.
I could have sworn I’ve seen a thread like this already… Damn you deja-vu!
In case I’m wrong, ep3 and BM
Duke Nukem Forever, obviously. The universe would explode, but right before that happened it would be really funny.
Ep. 3. Obviously.
The complete Marathon redux pack. 1, Durandal, and Infinity all on one 1terrabyte 2 CM memory card. done in Bungie’s latest 2019 engine build.
You didn’t say we had to know it existed.
Either that or a sequel to it’s more successful knockoff, System shock III.
The new Deus Ex, Bioshock:Infinite, Portal 2 or Black Mesa.
If I had to choose… Probably the new Deus Ex. (Provided my computer can take it.)
Elsewise it would be Black Mesa. 
Well… I’ve lots to choose…
-Aliens Colonial Marines
-Aliens vs Predator (but make it a GOOD game this time around)
-Spore (but making it the game it should have been, developed to its full potential)
-Alan Wake (on the pc)
-Battlefield 3 (if it’s a pc exclusive it would be better, or if not, make a separate version more oriented and tweaked for consoles so everyone is happy)
-Half-Life EP 3 (obviously)
-Sim City 5 (a game worthy of being successor to Sim City 4)
-World in Conflict 2 (oh please, please)
-Black Mesa (but I believe that by the end of the year we will get it)
-Assassins Creed Brotherhood AND Assassins Creed 3 (maximum orgasm)
Obviously Episode 3.
There is no other game that I prefer.
Sorry for my bad English XD .
Brink or a new Elder Scrolls.
diablo 3
Ep3. Either that, or New Super Mario Bros. Wii 2.
SWToR
Portal 2
Uncharted 3
i guess hitman 5
HL2 Ep3 = it would satisfy all annoying fanboys and Valve could finally focus on making other games (like HL3 
).
Since so many people are saying Black Mesa, which is a mod, I’m going to say a different mod. Tamriel Rebuilt. Imagine getting to play all across a lore friendly, fully developed version of Tamriel. THAT would be freaking epic.