I missed out another big one, From Software; they made the King's Field series, the Armoured Core series, the Tenchu series, the Otogi series, the Echo Night series, the XBOX game Metal Wolf Chaos, the unique Japanese horror game Kuon, and Chromehounds for the the XBOX 360.

Nintendo for all great games like Zelda , Metroid , And Mario :D
Capcom for our favorite Phoenix Wright and Street Fighters , the blue bomber : Megaman :D
Namco-Bandai for Tekken , Tales series , and Bandai's Great games :D
Cing for Trace Memory , Hotel Dusk
iNis for Ouendan , EBA
SNK-playmore for The King Of Fighters of course
Tecmo for Ninja Gaiden , and Tokobots ( this game was one of my favorites )
Konami for Yugioh , Metal Gear , Castelvania

i think that's all :D

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It's actually Tokobot, don't worry, I was calling it Tokobots for months as well. :S

Capcom=Well, let me just say theres a lot of answers to this one.
Konami=You gotta love MGS
Nintendo=I'm still a Mario lover at heart.
Namco=I love Pac-man, but I love 'Tales Of' even more.
Sega=...Before the crap.
Square Enix=Combination of my favorite RPG developers.
Bioware=Mass effect Mass effect Mass effect...
Level 5=They've got some cool games.
Red Entertainment=Play Tengai Makyou. Now.
Grasshopper=Suda 51.
Intelligent Systems=Advance wars, and Fire Emblem.

And that's pretty much it.

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