List as many developers as you want - and write what your favorite game and franchise are from each of them (your favorite game doesn't necessarily have to be from your favorite franchise, you know.) Here's mine:

Nintendo
Favorite Game: Super Mario 64
Favorite Franchise: The Legend of Zelda

Capcom
Favorite Game: Resident Evil 4
Favorite Franchise: Ace Attorney

Konami
Favorite Game: Castlevania: Symphony of the Night
Favorite Franchise: Castlevania

Square-Enix
Favorite Game: Final Fantasy X
Favorite Franchise: Final Fantasy

Bandai-Namco
Favorite Game: Tales of Vesperia
Favorite Franchise: Tales of

Sega
Favorite Game: Sonic Adventure 2: Battle
Favorite Franchise: Sonic

Rockstar
Favorite Game: Grand Theft Auto IV
Favorite Franchise: Grand Theft Auto

Blizzard
Favorite Game: Starcraft
Favorite Franchise: Starcraft

Sony
Favorite Game: Shadow of the Colossus
Favorite Franchise: ICO/SotC I guess

Microsoft
Favorite Game: Gears of War 2
Favorite Franchise: Gears of War (This counts as MS right?)

"Microsoft
Favorite Game: Gears of War 2
Favorite Franchise: Gears of War (This counts as MS right?)"
no i wouldn't put it like that since they're just publishing and development is done by epic.

Nintendo
Favorite Game: Earthbound
Favorite Franchise: The Legend of Zelda

Capcom
Favorite Game: Dino Crisis
Favorite Franchise: Monster Hunter

Rockstar
Favorite Game: Grand Theft Auto SA
Favorite Franchise: Red Dead Revolver

Blizzard
Favorite Game: None
Favorite Franchise: None

Sony
Favorite Game: Shadow of the Colossus
Favorite Franchise: Team Ico games

Microsoft
Favorite Game: Dreamfall :The Longest Journey
Favorite Franchise: The Longest Journey (its by microsoft right?)

EA
Favorite Game : Road Rash : Jailbreak
Favorite Franchise : James Bond Games

some developers aren't mentioned because i can't pick one game.

That's true, but most people would count Kirby and Pokémon towards Nintendo despite them not developing the games themselves. But if so, let's just say Epic instead of MS in my post.

Nintendo
Favorite Game: Donkey Kong 64
Favorite Franchise: Donkey Kong

Capcom
Favorite Game: Mega Man X
Favorite Franchise: Mega Man

Square-Enix
Favorite Game: Final Fantasy X
Favorite Franchise: Final Fantasy

Rockstar
Favorite Game: Grand Theft Auto: Vice City
Favorite Franchise: Grand Theft Auto

Blizzard
Favorite Game: Warcraft III
Favorite Franchise: Warcarft

Sony
Favorite Game: Dark Cloud 2
Favorite Franchise: Uncharted

Microsoft
Favorite Game: Fable
Favorite Franchise: Gears of War

Some thing like that.

Nintendo
Favorite Game: The Legend of Zelda: Ocarina of Time
Favorite Franchise: The Legend of Zelda

Sega
Favorite Game: Sonic adventure 2 battle
Favorite Franchise: Phantasy Star Online

Capcom
Favorite Game: Street Fighter 2 Turbo
Favorite Franchise: Phoenix Wright

Nintendo
Favorite Game: Super Smash Bros. Brawl
Favorite Franchise: Kirby/Super Smash Bros.

GameArts
Favorite Game: Lunar: Eternal Blue (Sega CD)
Favorite Franchise: Ugh, Grandia and Lunar.

Blizzard
Favorite Game: Diablo 2 LoD
Favorite Franchise: Warcraft

Capcom
Favorite Game: God Hand
Favorite Franchise: Resident Evil?

Namco
Favorite Game: Tales of the Abyss
Favorite Franchise: Tales

Sony
Favorite Game: Uncharted 2 (well its Naughty Dog, but still )
Favorite Franchise: Uncharted

Sega
Favorite Game: Phantasy Star IV
Favorite Franchise: Valkyria Chronicles

Square-Enix
Favorite Game: Parasite Eve
Favorite Franchise: Parasite Eve? (only played the first one)

Valve
Favorite Game: Half-Life 2
Favorite Franchise: Half-Life

The Creative Assembly
Favorite Game: Rome: Total War
Favorite Franchise: Total War

EA
Favorite Game: MVP Baseball 2005
Favorite Franchise: FIFA?

This is tough >>

Blizzard:
Game: Warcraft 3
Franchise: Warcraft

Square Enix:
Game: Kingdom Hearts 2
Franchise: gaaaaaaaaah I don't know. Final Fantasy, no, Kingdom Hearts. I'll go KH. xD

EA:
Game: Need for Speed: Carbon
Franchise: Need for Speed

Obsidian
Game: KOTOR 2
Series: KOTOR i guess, even though they made one game xD

Bioware:
Game: KOTOR 1
Franchise: KOTOR


Sega:
Game: Virtua Tennis 3 @_@
Franchise: Virtua/Sega Tennis

Ubisoft:
Game: Prince of Persia: Warrior Within
Franchise: Prince of Persia

Bethesda:
Game: Elder Scrolls IV: Oblivion
Franchise: Elder Scrolls

Konami:
Game: Metal Gear Solid 3
Franchise: Metal Gear Solid

TOSE:
Game: Valkyrie Profile: Lenneth
Franchise: Valkyrie Profile, even though they ported a lot of Final Fantasy they were the older ones I don't like as much

Namco:
Game: Ridge Racers 2
Franchise: Ridge Racers

Capcom:
Game: Devil May Cry 3
Franchise: Devil May Cry ... although Monster Hunter is good too, and Street Fighter isn't bad

Sony:
Game: God of War
Franchise: God of War

I guess all my favorite games are with my favorite franchises xD

I'll go with all of yours and add a few...

Nintendo
Favorite Game: Metroid Prime
Favorite Franchise: Metroid Prime

Capcom
Favorite Game: Resident Evil 4
Favorite Franchise: Devil May Cry

Konami
Favorite Game: Metal Gear Solid 3: Snake Eater
Favorite Franchise: Metal Gear Solid

Square-Enix
Favorite Game: Final Fantasy X
Favorite Franchise: Final Fantasy

Bandai-Namco
Favorite Game: Tekken 3
Favorite Franchise: Tales of

Sega
Favorite Game: Valkyria Chronicles
Favorite Franchise: Valkyria Chronicles

Blizzard
Favorite Game: Diablo II LoD
Favorite Franchise: Diablo

Sony
Favorite Game: Ratchet & Clank 3
Favorite Franchise: Ratchet & Clank

Microsoft
Favorite Game: Halo: Combat Evolved
Favorite Franchise: Halo

From Software
Favorite Game: Armored Core: Master of Arena
Favorite Franchise: Armored Core

Atlus
Favorite Game: Persona 3 FES
Favorite Franchise: Digital Devil Saga

NIS
Favorite Game: Disgaea 3
Favorite Franchise: Disgaea

Square Enix:
Game: Final Fantasy XII
Franchise: Final Fantasy

Nintendo:
Game: Pokemon Crystal
Franchise: Pokemon

Rockstar:
Game: Midnight Club LA
Franchise: GTA

EA:
Game: The Sims 2
Franchise: Need for Speed

Atlus:
Game: Trauma Center
Franchise: Trauma Center

Microsoft:
Game: Fable II
Franchise: Viva Pinata

Namco:
Game: Tales of Symphonia: Dawn of the New World
Franchise: Soul Calibur