根据北美软件协会、IGN和EA洛杉矶发布的相关消息，E3期间将有以下是部分游戏公司的参展名单：
2K Games
BioShock (PS3)
Borderlands (PC, PS3, X360)
Sid Meier\'s Civilization IV: Colonization (PC)
2K Sports
NBA 2K9 (PS2, PS3, X360)
NHL 2K9 (PS2, PS3, Wii, X360)
AkellaDisciples III: Renaissance (PC)
Heavy Duty (PC)
Moscow Racer (PC)
Numen (PC)
PT Boats: Knights of the Sea (PC)
Postal III (PC, X360)
Showdown: Scorpion (PC)
Bethesda Softworks
Fallout 3 (PC, PS3, X360)
Capcom
Bionic Commando (PC, PS3, X360)
Bionic Commando Rearmed (PC, PS3, X360)
Capcom Project #1 [untitled] (other)
Capcom Project #2 [untitled] (other)
Dark Void (PC, PS3, X360)
MotoGP 08 (other)
Neopets Puzzle Adventure (PC, Wii)
Plunder (PC, PS3, X360)
Resident Evil 5 (PS3, X360)
Spyborgs (Wii)
Street Fighter IV (PC, PS3, X360)
Super Street Fighter II Turbo HD Remix (PS3, X360)
Codemasters
Damnation (PC, PS3, X360)
Dragonology (DS, Wii)
Jumpgate Evolution (PC)
Operation Flashpoint 2: Dragon Rising (PC, PS3, X360)
Rise of the Argonauts (PC, PS3, X360)
Wizardology (DS, Wii)
Crave Entertainment
Defendin\' de Penguin (DS, Wii)
Ford Racing Off Road (PS2, PSP, Wii)
King of Clubs Mini-Golf (Wii)
PBR: Out of the Chute (PS2, Wii)
Purr Pals (Wii)
Solitaire & Mahjong (Wii)
D3 Publisher
Bangai-O Spirits (DS)
Ben 10: Alien Force -- The Game (DS, PS2, PSP, Wii)
Narut Clash of The Ninja Revolution 2 (Wii)
Narut Path of the Ninja 2 (DS)
Puzzle Quest: Galactrix (DS, PC, X360)
Deep SilverS.T.A.L.K.E.R.: Clear Sky (PC)
Disney Interactive Studios
Disney Fairies: Tinker Bell (DS)
High School Musical 3: Senior Year (DS)
High School Musical 3: Senior Year Dance (PC, PS2, Wii, X360)
Pure (PC, PS3, X360)
Spectrobes: Beyond The Portals (DS)
Ultimate Band (DS, Wii)
Eidos Interactive
Battlestations: Pacific (PC, X360)
Just Cause 2 (PC, PS3, X360)
Monster Lab (Wii)
Tomb Raider Underworld (PC, PS3, X360)
Electronic Arts
Command & Conquer: Red Alert 3 (PC, PS3, X360)
Crysis Warhead (PC)
Dead Space (PC, PS3, X360)
Mercenaries 2: World in Flames (PC, PS3, X360)
Mirror\'s Edge (PC, PS3, X360)
Skate It (Wii)
Spore (PC)
The Lord of the Rings: Conquest (PC, PS3, X360)
Warhammer Online: Age of Reckoning (PC)
Gamecock
Dungeon Hero (PC, X360)
Legendary (PC, PS3, X360)
Velvet Assassin (PC, X360)
Jagex
RuneScape High-Detail (Webgame)
Microsoft
Banjo-Kazooie: Nuts & Bolts (X360)
Fable 2 (X360)
Gears of War 2 (X360)
Halo Wars (X360)
Too Human (X360)
Viva Piñata: Trouble in Paradise (X360)
Midway Games
Blitz: The League II (PS3, X360)
Game Party 2 (Wii)
Mortal Kombat vs. DC Universe (PS3, X360)
TNA iMPACT! (PS2, PS3, Wii, X360)
This is Vegas (PC, PS3, X360)
Touchmaster 2 (DS)
Unreal Tournament III (X360)
Wheelman (PC, PS3, X360)
Namco Bandai
Soulcalibur IV (PS3, X360)
Natsume
Harvest Moon: Island of Happiness (DS)
Harvest Moon: Tree of Tranquility (Wii)
Natsume
Harvest Moon: Island of Happiness (DS)
Harvest Moon: Tree of Tranquility (Wii)
Rune Factory 2: A Fantasy Harvest Moon (DS)
Nintendo
Mystery Case Files: MillionHeir (DS)
Sony Computer Entertainment
Killzone 2 (PS3)
LittleBigPlanet (PS3)
MotorStorm: Pacific Rift (PS3)
PixelJunk Eden (PS3)
Resistance 2 (PS3)
SIREN: Blood Curse Episode #1 [PSN] (PS3)
SOCOM: Confrontation (PS3)
Sony Online Entertainment
Free Realms (PC, PS3)
The Agency (PC, PS3)
SouthPeak Interactive
B-Boy (PS2, PSP)
Big Bang Mini (DS)
Edge of Twilight (PC, PS3, X360)
Mister Slime (DS)
Monster Madness: Grave Danger (PS3)
Ninjatown (DS)
Two Worlds: The Temptation (PC, X360)
THQ
All-Star Cheer Squad (DS, Wii)
Baja: Edge of Control (PS3, X360)
Darksiders: Wrath of War (PS3, X360)
Deadly Creatures (Wii)
Lock\'s Quest (DS)
Red Faction: Guerrilla (PC, PS3, X360)
Saints Row 2 (PC, PS3, X360)
UFC 2009 Undisputed (X360)
Viva Pi?ata: Pocket Paradise (DS)
WWE SmackDown vs. Raw 2009 (DS, PS3, Wii, X360)
Warhammer 40,000: Dawn of War II (PC)
de Blob (Wii)
Tomy Corporation
Naruto: Clash of Ninja Revolution 2 (Wii)
Naruto: Path of the Ninja 2 (DS)
Valve
Left 4 Dead (PC, X360)
Warner Bros. Interactive
LEGO Batman: The Videogame (DS, PC, PS2, PS3, PSP, Wii, X360)
Project Origin (PC, PS3, X360)
XSEED GamesLittle King\'s Story (Wii)
Valhalla Knights 2 (PSP)
