Prototypes by system/PlayStation Portable

ATV Offroad Fury Pro (Sep 25, 2006 prototype)

Ace Combat X: Skies of Deception (Aug 1, 2006 prototype)

Castlevania The Dracula X Chronicles (Castlevania The Dracula X Chronicles (Jan 30, 2007)

Championship Manager 2010 (Prototype)

Chili Con Carnage (Sep 23, 2006 prototype)

Crash Of The Titans (Pre-Production 1.0)

Crazy Taxi: Fare Wars (Jun 28, 2007 prototype)

Daxter (Feb 10, 2006 prototype)

Death Jr (Jul 22, 2005 prototype)

Eye of Judgment: Legends (Oct 22, 2009 prototype)

Fight Night Round 3 (Dec 21, 2005 prototype - Debug)

Ford Racing: Off Road (Jan 11, 2008 prototype)

Formula One 06 (Jun 15, 2006 prototype)

Gangs of London (Jun 5, 2006 prototype)

Ghost Rider (Jan 18, 2007 prototype)

God of War: Chains of Olympus (Feb 1, 2008 prototype)

Isle of Minno (May 12, 2006 prototype)

Jeanne d'Arc (Aug 17, 2006 prototype)

Killzone: Liberation (Aug 21, 2006 prototype)

Killzone: Liberation (Jul 19, 2006 prototype)

Lemmings (Dec 8, 2005 prototype)

Lemmings (Jan 18, 2006 prototype)

Lemmings (Sep 30, 2005 prototype)

LocoRoco (Apr 20, 2006 prototype)

LocoRoco 2 (Sep 5, 2008 prototype)

MX vs. ATV Untamed (Nov 20, 2007 prototype)

MediEvil: Resurrection (Feb 15, 2005 prototype)

Melodie (Sep 2, 2005 prototype)

Metal Gear Solid: Portable Ops (Feb 6, 2007 prototype)

PaRappa the Rapper (Apr 16, 2007 prototype)

Ratchet & Clank: Size Matters (Jan 9, 2007 prototype)

Ratchet and Clank: Size Matters (Dec 20, 2006 prototype)

Ratchet and Clank: Size Matters (Oct 11, 2006 Multiplayer Beta)

Rock Band Unplugged (Dec 10, 2008 prototype)

SOCOM: U.S. Navy SEALs - Fireteam Bravo (Aug 19, 2005 prototype)

Saints Row - Undercover (Sep 8, 2009 prototype)

Secret Agent Clank (May 9, 2008 prototype)

Silent Hill: Origins (Aug 7, 2006 prototype)

Silent Hill: Origins (Jul 19, 2007 prototype)

Silent Hill: Origins (May 26, 2006 prototype)

Sonic Rivals 2 Pre-Production (Oct 22, 2007 prototype)

Sonic Rivals 2 Test Sample (Oct 8, 2007 prototype)

The 3rd Birthday (Jan 27, 2011 prototype)

The Elder Scrolls Travels: Oblivion (Apr 27, 2007 prototype)

The Elder Scrolls Travels: Oblivion (Feb 2, 2007 prototype)

The Elder Scrolls Travels: Oblivion (Jan 31, 2007 prototype)

The Elder Scrolls Travels: Oblivion (Jun 9, 2006 prototype)

The Elder Scrolls Travels: Oblivion (Nov 21, 2006 prototype)

The Eye of Judgment: Legends (Sep 28, 2009 prototype)

The Lord of the Rings: Tactics (Oct 4, 2005 prototype)

Tiger Woods PGA Tour 09 (Jul 15, 2008 prototype)

Tom Clancy's Splinter Cell Essentials (Jan 18, 2006 prototype)

WRC: FIA World Rally Championship (Aug 11, 2005 prototype)

WTF: Work Time Fun (Jul 27, 2006 prototype)

Wipeout Pulse (May 4, prototype)