If any two would cooperate...

[Sewblon]

Double Fine and Team Ico, to make a Psychonauts and Shadow of the Collosus crossover.

 

[Irridium]

Naughty Dog and Insomniac

bam

 

[rangerchandller]

Any Of them that dont have bungie in them hopefully they will all gang up and muyrder microsoft and bungie

 

[Irridium]

I have another, although its with people and not companies... anyway:

Tim Schafer and Miyamoto.
Imagine what they could come up with.

 

[Aedrial]

Bioware and Bethesda.

I second that, Imagine a open world KOTOR.
(I'm aware it was open, but I mean on a bigger scale)

 

[icekiller453]

hhhmmm.....Maybe Nintendo and EA (Bad Parts) to see the monsterous abomination created from it =D

 

[Dys]

iD software and crytek. Imagine a doom-esque game, with doom esque atmosphere......OUTSIDE ON A TROPICAL ISLAND...AGHHHH *head explodes*

 

[StarStruckStrumpets]

ArenaNet and Blizzard. Together they would make the most awesome MMORPG of awesomeness that was ever created. For those of you who question my thoughts, look up "Blade & Soul".

 

[StarStruckStrumpets]

Naughty Dog and Insomniac

bam

Reading this made me go look for a towel. Seriously, that would be the most hilariously good idea ever.

 

[Mackinator]

My second was Valve and Infinity Ward. Think about it: CoD's Gameplay with a story comparable to HL2? Fuck yeah!

Wow, that would be the Ultimate team.

 

[The_Prophet]

I think that if Behemoth joined up with Schafer and Double Fine studios they could create something great, both being very good in the humor and art direction fields and both seemingly good at making quality games.
Though I don't have a lot to judge DF on.

Good idea!

 

[GeoPB]

Lionhead and Sqaure-Enix.

 

[Snor]

Turbine and EA: because i want to see them go bankrupt when they try to release a mediocre mmo every half year

bethesda and bioware for the greatest rpg ever

 

[chstens]

EA and Capcom for one reason and one reason alone madden with mega man!!!

Madden Man!

 

[Cavmatrix]

Bethseda and Lionhead.
RPG+RPG=RRPPGG=Realy Radical Pretty Pwning Great Game.

 

[veloper]

Valve + something, or
Blizzard + something

Valve and Blizzard are the last 2 PC devs who know how to test and polish up their games.

*something could be a small but creative developer, like for example obsidian or triumph.

 

[irishstormtrooper]

How about Insomniac and DICE? Insomniac could make kick-ass weapons and DICE could give it great multiplayer and destructible environments along with refined FPS controls.

 

[Time Travelling Toaster]

Square-Enix and Valve...

Just imagine the pure awesome.

This, a Final Fantasy co-produced by Valve...that would be a perfect game for me

 

[Shepard's Shadow]

Microsoft and Sony

 

[Kajt]

Valve and Blizzard, of course.
Their first game would be Starcraft Ghost: Source.