this is a link to check on all games that have been tested and confirmed working with the Pro Online Client...it will give you the correct game ID number you will need to use to connect with others, unless it says "CROSSLINKED", which means u can use any region version of the game...the list underneath is current as of September 2014.
Compatible Games List -
[You must be registered and logged in to see this link.]100% TESTED and Supported Games:
[ULES-00688] Sid Meier's Pirates
[NPEH-00033] Kurulin Fusion
[NPJH-50878] Toukiden Kiwami
[UCES-00767]Everybody's Golf 2
[ULJS-00237] GOD EATER
[NPJH-90338] God Eater 2 Demo
[NPJH-50832]God Eater 2
[ULES-00276] Street Riders
[CROSSLINKED] PES 2012
[ULES-01576] PES 2013
[ULES-01596] PES 2014
[ULES-00719] Asphalt Urban GT 2
[ULES-00474] Eragon
[ULES-00773] Dave Mirra BMX Challenge
[ULES-01448] Pro Cycling Season 2010
[UCES-00373] Moto GP
[ULES-01316] IL 2 Sturmovik: Birds of Prey
[ULES-00665] Over the Hedge: Hammy Goes Nuts
[ULES-00973] Fast and the Furious: Tokyo Drift
[ULES-00909] Puzzle Quest: Challenge of the Warlords
[NPUH-10091] Pool Hall Pro
[ULES-01355] Formula 1 2009
[ULES-00837] Tales of The World - Radiant Mythology
[UCES-00855] Socom US Navy Seals: Tactical Strike
[CROSSLINKED] SOCOM Fireteam Bravo
[CROSSLINKED] SOCOM Fireteam Bravo 2
[CROSSLINKED] SOCOM Fireteam Bravo 3
[ULJS-00176] Soul Eater Battle Resonnance
[ULUS10259] Heatseeker
[ULJM-05933/NPJH-50465] Project Diva Extend
[Homebrew-ULUS40037] Psp Legacy - Doom
[NPJH50443] Final Fantasy Type-0
[ULES-01494] Tron Evolution
[ULES-00618] Shrek Smash n' Crash Racing
[ULUS-10149] Pac-Man World Rally
[UCES-00694] Pursuit Force: Extreme Justice
[ULES-01350] Tom Clancy's Ghost Recon: Predator
[ULUS-10518] Naruto Ultimate Ninja Heroes 3
[ULES003355] Field Commander
[ULES00772] Alien Syndrome
[ULES-00785] After Burner: Black Falcon
[ULES-01017] Ultimate Board Game Collection
[HOMEBREW] Halo PSP (Kurok Engine)
[ULJS-00322] Another Century's Episode Portable
[UCES-00758] Smash Court Tennis 3
[UCES01250] Motorstorm Arctic Edge
[ULUS-10323] Sonic Rivals 2
[ULES-00704] Free Running
[UCES-01184] Resistance Retribution
[ULUS-10102] Mortal Kombat Unchained
[CROSSLINKED] M.A.C.H. Modified Air Combat Heroes
[NPUG80086] flOw
[CROSSLINKED] World Series of Poker 2008
[CROSSLINKED] Midnight Club LA Remix
[CROSSLINKED] N+
[ULJM-05709] K-ON! Houkago Live
[UCUS-98758] MLB '11 The Show
[CROSSLINKED] ACE COMBAT JOINT ASSAULT
[CROSSLINKED] ARMORED CORE 3 Portable
[CROSSLINKED] OUTRUN 2006: COAST 2 COAST
[CROSSLINKED] Dungeon Siege: Throne of Agony
[CROSSLINKED] DISSIDIA duodecim FINAL FANTASY
[CROSSLINKED] DISSIDIA FINAL FANTASY
[CROSSLINKED] Metal Gear Solid - Portable Ops +
[CROSSLINKED] Metal Gear Solid - Portable Ops
[ULJM-05800] Monster Hunter Portable 3rd
[CROSSLINKED] Monster Hunter Freedom Unite
[CROSSLINKED] Fat Princess: Fistful of Cake
[CROSSLINKED] Tekken 6
[CROSSLINKED] Split Second Velocity
[ULJM-05553] WARSHIP GUNNER 2 PORTABLE
[CROSSLINKED] Untold Legends The Warrior's Code
[CROSSLINKED] Untold Legends...: Brotherhood of the Blade...
[CROSSLINKED] PANGYA : Fantasy Golf
[CROSSLINKED] BLOOD BOWL
[CROSSLINKED] Worms: Battle Islands
[CROSSLINKED] Worms Open Warfare 2
[CROSSLINKED] Virtua Tennis 3
[CROSSLINKED] ModNations... Racers