Misc. Event Demos by Year

CES

Summer Consumer Electronics Show 1990 (June 2 - June 5)

Game	System	Notes
Castle of Illusion: Starring Mickey Mouse (May 25, 1990 prototype)	Sega Master System
Ghouls 'N Ghosts (prototype)	Sega Master System	Rolling demo
World Cup Italia '90 (Prototype)	Sega Master System	Rolling demo

Summer Consumer Electronics Show 1992 (May 21 - May 24)

Game	System	Notes
Sega Multimedia Studio: Sega CD Demo (May 29, 1992 prototype)	Sega CD	Tech demo
Superman (May 25, 1992 prototype)	SNES
The Magical Quest Starring Mickey Mouse (May 21, 1992 prototype)	SNES

Winter Consumer Electronics Show 1994 (January 6 - January 9)

Game	System	Notes
The Jungle Book (WCES 1994 prototype)	Sega Mega Drive

Summer Consumer Electronics Show 1994 (June 23 - June 25)

Game	System	Notes
BlackThorne (CES prototype)	SNES

Winter Consumer Electronics Show 1995 (January 6 - January 9)

Game	System	Notes
Burn Out (Prototype)	Atari Jaguar

Nintendo Space World

Nintendo Space World 1997 (November 21 - November 24)

Game	System	Notes
Pokémon Gold & Silver (Spaceworld 1997 Demo)	Game Boy	Obtained through illegal means, it is not permitted to upload it to hidden palace.
The Legend of Zelda: Ocarina of Time Space World 1997	Nintendo 64	Although the version was never leaked, some assets ended up being leaked on F-Zero X (Prototype).

Nintendo Space World 1999 (August 27 - August 29)

Game	System	Notes
Pokémon Gold & Silver (Spaceworld 1999 Demo)	Game Boy	Obtained through illegal means, it is not permitted to upload it to hidden palace.

Nintendo Space World 2000 (August 24 - August 26)

Game	System	Notes
Doubutsu Banchou (N64 Prototype)	Nintendo 64	Unreleased Port
Nintendo SpaceWorld 2000 (Press CD)	None	Press CD

Nintendo Space World 2001 (August 24 - August 26)

Game	System	Notes
Assets/Gamecube/NintendoGamecubePreview	None

Tokyo Game Show

Tokyo Game Show 2004 (September 24 - September 26)

Game	System	Notes
Berserk: Millennium Falcon Hen Seima Senki no Shou (Jul 12, 2004 prototype)	PlayStation 2
Disney-Pixar The Incredibles (Sep 13, 2004 prototype)	GameCube

Tokyo Game Show 2007 (September 20 - September 23)

Game	System	Notes
Sega Rally Revo (TOKYO GAME SHOW BUILD prototype)	PlayStation 3

Tokyo Game Show 2009 (September 24 - September 27)

Game	System	Notes
LittleBigPlanet (Sep 17, 2009 prototype)	PlayStation 3

Tokyo Game Show 2010 (September 16 - September 19)

Game	System	Notes
Bullet Soul (Sep 14, 2010 prototype)	Xbox 360
DoDonPachi Resurrection (Sep 15, 2010 prototype)	Xbox 360
Dream C Club Zero (Sep 15, 2010 prototype)	Xbox 360
Dynasty Warriors: Gundam 3 (Sep 13, 2010 prototype)	Xbox 360
Gal Gun (Aug 29, 2010 prototype)	Xbox 360
Gun Loco (Sep 13, 2010 prototype)	Xbox 360
Naruto Shippuden: Ultimate Ninja Storm 2 (Sep 2, 2010 prototype)	Xbox 360
Otomedius Excellent (Sep 14, 2010 prototype)	Xbox 360
The Idolm@ster 2 (Sep 15, 2010 prototype)	Xbox 360
Vanquish (Aug 25, 2010 prototype)	Xbox 360

Gamescom

Gamescom 2009 (August 19 - August 23)

Game	System	Notes
MotorStorm: Apocalypse (Jul 29, 2010 Gamescom Demo prototype)	PlayStation 3	Possibly similar to MotorStorm: Apocalypse (Jul 29, 2010 E3 Demo).

Gamescom 2010 (August 18 - August 22)

Game	System	Notes
Mario & Sonic at the Olympic Winter Games (Jul 8, 2009 prototype)	Nintendo Wii

Gamescom 2011 (August 17 - August 21)

Game	System	Notes
Silent Hill: Downpour	Xbox 360	There are four builds labeled as gamescom( Silent Hill: Downpour (Aug 3, 2011 prototype) and Silent Hill: Downpour (Aug 4, 2011 prototype)) however whether either of these two builds was used at the event is unknown.
Super Mario 3D Land (May 26, 2011 kiosk demo)	Nintendo 3DS	Despite being used at E3 2011, it was also used at GAMESCOM 2011.

Gamescom 2012 (August 15 - August 29)

Game	System	Notes
Need for Speed: Most Wanted 2012 (Aug 16, 2012 prototype)	PlayStation 3	Unknown if this build was actually used. there are two more builds, they are Need for Speed: Most Wanted 2012 (Aug 12, 2012 prototype) and Need for Speed: Most Wanted 2012 (Aug 11, 2012 prototype).
Until Dawn (Gamescom Build)	PlayStation 3	Later canceled on PS3 and released on PS4. It was previously thought that this build (Until Dawn (Possibly Gamescom prototype)) would have been originally used in the event.

Gamescom 2013 (August 21 - August 25)

Game	System	Notes
Gran Turismo 6 (Aug 20, 2013 prototype)	PlayStation 3
Walking With Dinosaurs (Gamescom)	PlayStation 3
Ratchet & Clank: Into the Nexus (Aug 19, 2013 prototype)	PlayStation 3

Gamescom 2014 (August 13 - August 17)

Game	System	Notes
Battlefield Hardline (Aug 24, 2014 prototype)	PlayStation 3
Far Cry 4 (Aug 12, 2014 prototype)	PlayStation 4	Used later in an event on October 4, 2014. It is encrypted.

Misc.

'96 Tokyo Toy Show (June 6 - June 9)

Game	System	Notes
Super Nazo Puyo Tsuu: Rulue no Tetsuwan Hanjyouki (Tokyo Toy Show build)	SNES

Games Convention 2005 (August 17 - August 21)

Game	System	Notes
New Super Mario Bros. (Games Convention 2005 kiosk demo) - (Not found or dumped)	Nintendo DS	Same as E3 demo?

EGX London 2014 (September 25 - September 28)

Game	System	Notes
Splatoon (EGX London 2014 kiosk demo) - (Not found or dumped)	Wii U	Same as E3 demo?

EGX 2018 (September 20 - September 23)

Game	System	Notes
Luigi's Mansion (EGX London kiosk demo) - (Not found or dumped)	Nintendo 3DS	Full game/prototype on dev console.