The Games at E3 2014 list contains all of the biggest games appearing at E3 2014 in some form (not necessarily in "playable" form). Could be others not yet named, but these games have been confirmed...
I could clean the list up but I'm too lazy for that, so cut & paste it is...:icon_chee
Game Publisher Platforms
Adventure Time: The Secret of the Nameless Kingdom* Little Orbit PS3, Xbox 360, 3DS, Steam, PSN, Xbox GonD
Age of Wushu:Tempest of Strife* Snail Games, USA PC
Akiba's Trip: Undead & Underdressed* XSEED PS3 / PS Vita
Alien: Isolation* SEGA PS4, PS3,*Xbox One, Xbox 360, PC
Alphadia Genesis* Natsume Wii U
Assassin's Creed Comet Ubisoft PS3, Xbox 360
Assassin's Creed Unity* Ubisoft PS4, Xbox One, PC
A-Train: City Simulator* Natsume 3DS
Batman Arkham Knight* Warner Bros. PS4, Xbox One, PC
BattleCry* Bethesda PC
Battlefield 5 EA TBA
Battlefield: Hardline* EA PS3, PS4, Xbox 360, Xbox One, PC
Below Capybara Xbox One, PC
Black Gold Online* Snail GamesUSA PC
Borderlands the Pre-Sequel 2K PS3, Xbox 360, PC
Brandish: The Dark Revenant* XSEED PSP digital
Broforce* Devolver Digital PC
Call of Duty: Advanced Warfare* Activision TBA
Chariot* Frima Studio PS4, Xbox One, Wii U, PC
Civilization: Beyond Earth 2K PC
Corpse Party* XSEED PC
Costume Quest 2* Double Fine TBA
Danganronpa 2: Goodbye Despair* NIS PS Vita
Deep Down Capcom PS4
Defense Grid 2* 505 Games Xbox One, PS4, PC
Destiny* Activision PS4, PS3, Xbox One, Xbox 360 Pre-order
Disgaea 4* NIS PS Vita
Disney Infinity 2.0 Edition - Marvel Super Heroes* Disney Interactive Studios Wii, Wii U, Xbox 360, PlayStation 3, 3DS, iOS, PC
Disney Planes Fire & Rescue* Little Orbit Wii, Wii U, 3DS, DS
Disney Violetta: Rhythm & Music* Little Orbit Wii, 3DS, DS
Dragon Age: Inquisition* EA Xbox One, PS4, Xbox 360, PS3, PC
EA Sports UFC* EA Xbox One, PS4
Elite Dangerous* Frontier Developments PC, Mac
End of Serenity* Natsume PSP Pre-order
The Evil Within Bethesda Xbox One, PS4, Xbox 360, PS3, PC
Evolve* 2K PS4, Xbox One, PC Pre-order
Fable Legends* Lionhead Studios Xbox One
Fairy Fencer F* NIS PS3
Falling Skies: The Game* Little Orbit PS3, Xbox 360, Steam, Wii U, PSN, Xbox GonD
Fantasia Music Evolved* Disney Interactive Studios Xbox One, Xbox 360
Far Cry 4* Ubisoft PS4, Xbox One, PC, PS3, 360 Pre-order
FIFA 15* EA TBA
Forza Horizon 2* Microsoft Xbox One, Xbox 360
Gabrielle's Monstrous Duel* Natsume iOS
Game of Thrones (Telltale) Telltale TBA
Gears of War 4 Microsoft TBA
Grey Goo* Grey Box PC
Halo 5: Guardians* Microsoft Xbox One Pre-order
Halo: The Master Chief Collection Microsoft Xbox One
Harvest Moon: The Lost Valley* Natsume 3DS
Hatsune Miku -Project DIVA- F 2nd* SEGA PS3, PS Vita
Heroes of Gaia* Snail GamesUSA iOS / Android
Homefront 2:The Revolution* Deep Silver Xbox One, PS4PC
Hometown Story: Pocket* Natsume iOS
Hotline Miami 2: Wrong Number* Devolver Digital PC
How to Train Your Dragon 2* Little Orbit Xbox 360, 3DS, Wii, Wii U, PS3
Hyrule Warriors Nintendo Wii U
Killer Instinct Season 2* Microsoft Xbox One
Kingdom Come Deliverance Warhorse PS4, Xbox One, PC
Kingdom Hearts 3 Square Enix PS4, Xbox One Pre-order
The Legend of Zelda for Wii U* Nintendo Wii U
Lords of the Fallen* CI Games PC, PS4, Xbox One
Madden NFL 15* EA TBA
Mad Max Warner Bros. PS4, PS3, Xbox One, Xbox 360, PC
Mass Effect 4 EA TBA
Metal Gear Solid: The Phantom Pain Konami PS3, PS4, Xbox One, Xbox 360 Pre-order
Metro: Redux* Deep Silver PS4, Xbox One and PC
Middle-earth: Shadow of Mordor* Warner Bros. PS3, PS4, Xbox One, Xbox 360, PC Pre-order
Mirror's Edge 2 EA PS4, Xbox One, PC
Monster Hunter 4 Ultimate* Capcom 3DS
Mortal Kombat X
Natural Doctrine* NIS PS3, PS4, PS Vita
NHL 15* EA Xbox One, PS4, Xbox 360, PS3
Ninja Strike* Natume iOS
No Man's Sky Hello Games TBA
Not a Hero* Devolver Digital PC
The Order: 1886 Sony PS4 Pre-order
Persona 5 Atlus PS3
Pokemon Omega Ruby Nintendo 3DS
Pokemon Alpha Sapphire Nintendo 3DS
Project Spark Microsoft PC, Xbox 360, Xbox One
Puzzle Heroes Saga* Snail GamesUSA iOS / Android
Quantum Break Microsoft Xbox One
Reel Fishing: Master's Challenge' Natsume PS Vita
Reel Fishing Pocket 2: Ocean* Natsume iOS
Senran Kagura Bon Appetit* XSEED PS Vita
Senran Kagura Shinovi Versus* XSEED PS Vita
Story of Seasons* XSEED 3DS
Taichi Panda* Snail GamesUSA iOS / Android
Transistor Supergiant PS4, PC
Shin Megami Tensei X Fire Emblem Nintendo Wii U
The Sims 4* EA PC
Skylanders Trap Team* Activision TBA
Sonic Boom* SEGA Wii U, 3DS
Star Wars Attack Squadrons EA PC
Star Wars Battlefront* EA PS4, Xbox One, PC
Star Wars (Visceral Project) EA TBA
Sunset Overdrive* Microsoft Xbox One
Super Smash Bros. for 3DS* Nintendo 3DS Pre-order
Super Smash Bros for Wii U* Nintendo Wii U Pre-order
Tales from the Borderlands Telltale TBA
Tetris Ultimate* Ubisoft PS4, Xbox One, PC
Tiger Woods PGA Tour 15* EA TBA
Tom Clancy's The Division* Ubisoft Xbox One, PS4, PC Pre-order
Ultra Street Fighter IV* Capcom PC, Xbox 360, PS3
Uncharted (PS4)* Sony PS4
Warhammer 40K: The Eternal Crusade* Behaviour Interactive PC, PS4, Xbox One
Winx Club: Saving Alfea* Little Orbit 3DS, DS Pre-order
The Witcher 3 Wild Hunt* Warner Bros./Bandai Namco PS4, Xbox One, PC Pre-order
Wolfenstein: The New Order Bethesda PS4, Xbox One, PC, PS3, Xbox 360
WWE 2K15 2K TBA
World of Tanks* Wargaming PC, Xbox 360
World of Tanks: Blitz* Wargaming Mobile
Xblaze Code Embryo* Aksys PS3, Vita
X (Monolith Project) Nintendo Wii U
*IGN has confirmed with the publisher that this game will appear at E3 in some form, not necessarily playable.
Additional EA Games at E3
EA has also announced 6 new projects will be at E3 2014, one of which is a Frostbite Engine-based game planned for release in Q3 of 2014.