To clear up a question many of us have had before launch: what games are available at this moment to purchase and download for Vita from the PSN?

I'm guessing you mean Vita games?

• Asphalt: Injection
• BlazBlue: Continuum Shift
• Dungeon Hunter Alliance
• FIFA Soccer
• Escape Plan
• F1 2011
• Hot Shots Golf: World Invitational
• Little Deviants
• Lumines Electronic Symphony
• Michael Jackson The Experience HD
• ModNation Racers: Road Trip
• Rayman Origins
• Super Stardust Delta
• Ultimate Marvel vs. Capcom 3
• Uncharted: Golden Abyss
• Virtua Tennis 4
• Wipeout 2048

Every single vita game will be available at launch on PSN afaik.

I was thinking about the older games for PSP, PSOne, and PS2. Is it just limited to the list that GiantBomb published earlier?

@014 said:

I was thinking about the older games for PSP, PSOne, and PS2. Is it just limited to the list that GiantBomb published earlier?

Yes and no.

The list posted was what's in the store. There are, however, a certain number of PSP titles that will work. You must purchase them either through your PS3 or PSP, then move them to the Vita from the PS3.

Here's the confirmed list so far:

• Ape Escape on the Loose
• Burnout Legends
• Capcom Classic Collection: Reloaded
• Capcom Classic Collection: Remixed
• Capcom Puzzle World
• Castlevania: Dracula X Chronicles
• Crush
• Field Commander
• Gradius Collection
• Grand Theft Auto: Chinatown Wars
• Grand Theft Auto: Liberty City Stories Grand Theft Auto: Vice City Stories
• Gran Turismo
• Hammerin' Hero
• Hot Shots Golf: Open Tee
• Jeanne d'Arc
• Killzone Liberation
• Kururin Fusion
• LEGO Star Wars III: The Clone Wars
• LittleBigPlanet
• LocoRoco: Midnight Carnival
• Locoroco 2
• Mercury Meltdown
• Metal Gear Solid: Peace Walker
• Patchwork Heroes
• Persuit Force
• PQ: Practical Intelligence Quotient Pursuit Force
• Puzzle Quest
• R-Type Command
• Ratchet & Clank: Size Matters
• Rock Band Unplugged
• Sega Genesis Collection
• Silent Hill: Origins
• Silent Hill: Shattered Memories
• Sonic Rivals
• Sonic Rivals 2
• The Warriors
• Unbound Saga
• Valkyria Chronicles II
• Wipeout Pulse
• All NeoGeo titles
• All PCE titles

Well, the official 'PS VITA FAQ' on the Playstation Blog lists '275 legacy PSP titles' to download on launch, with more coming.  
 
http://blog.us.playstation.com/2012/02/16/ps-vita-the-ultimate-faq/ 
  

PSP Titles

Great! Final Fantasy Tactics and Harvest Moon are games I must get. (I never had a PSP.) Several others sound promising... to look into at least. w00t

Having games day one is great... but it's too bad that for some reason sony waits till late evening to update psn on tuesdays... It's 9:45 here and today's stuff has yet to hit