Well, I remember posting about this: The Red Star It isn't a PSP game; it is a PS2 game. Does that count?
I just saw a thread in "game releases" forum about a game called Blast Off. I'm going to check out the thread.
There used to be a complete copy of it on the app store called Aquatica - The Underwater Adventure, but it was pulled it looks like. That was pretty much, like I said, a complete copy of flOw.
You are only saying that 'cause you hate Ngmoco's Freemium model but they only publish it, it's by a company called "Touch Circus".
Not to be douche, but it's actually "Hand Circus." Funny thing is, I tried the LocoRoco demo on PSN and didn't like the controls at all -- I kept trying to tilt my PSP to get the ball rolling.