I own a PSP and I have 20 games for it:
Metal Gear Solid: Portable Ops
Metal Gear Solid: Portable Ops PLUS
Metal Gear Solid: Digital Graphic Novel
Syphon Filter: Dark Mirror
Syphon Filter: Logan´s Shadow
Killzone: Liberation
WARHAMMER 40,000: Squad Command
Final Fantasy tactics: The War of the Lions
Silent Hill Origins
Locoroco
Lumines
Castlevania: Dracula X Chronicles
Tekken 5: Dark Resurrection
Jeanne D´Arc
Pursuit Force
Daxter
Ratchet & Clank: Size matters
Guilty Gear XX: Judgement
SOCOM: U.S. Navy SEALs Fireteam Bravo
SOCOM: U.S. Navy SEALs Fireteam Bravo 2
The last game I bought was WARHAMMER 40,000: Squad Command, last month. I will be buying soon God of War: Chains of Olympus, Crisis Core and Pursuit Force: Extreme Justice