The release of Go! Puzzle on the European PSP PLAYSTATION Store heralds the beginning of what we hope is a long-running trend: the porting of downloadable PSN games to the PSP. Here are some of favorite games that are currently only available on PS3, which we hope to see on our favorite handheld some time soon ....

Everyday Shooter
Jon Mak's music-shooter is perfect for PSP fans already familiar to Q? Entertainment's Lumines and Every Extend Extra. The game's unique album presentation will be great for gamers on the go: play a single song, or enter Shuffle mode and play 'em all. With a good pair of headphones on, we'd find ourselves lost in the killer soundtrack for hours. The minimalist graphics are perfect for the PSP's small screen too.

Calling All Cars
This is actually confirmed to be heading to PSP. The twisted mind behind God of War and Twisted Metal crafted a simple, but terrifically fun multiplayer game that will also work well with the PSP. Imagine: downloading the game, jumping online and playing against other PSP and PS3 owners. Even cooler would be if you could Game Share and play against friends in a local area. The simple controls can be easily mapped to the face and shoulder buttons of the PSP. We can't wait to find out more about the PSP version of this PSN classic soon.

fl0w
thatgamecompany's unique motion-controlled game "experience" was a fun, but brief, experiment that combined high art and gameplay. You can easily remove the tilt controls of the game and create an equally compelling title for PSP that can be controlled with the analog nub. Each of the various creatures has its own unique gameplay, and those that need a moment to de-stress while on the subway will love to have quick access to this innovative title any time from their PSP's Memory Stick.

Go! Sudoku
Everyone loves sudoku, right? A PSP version of this oft-forgotten PSN downloadable title is an easy must for the PSP Store. Hopefully, it'll use the same pricing model as the PS3 original: give you a small sample of puzzles for free, but then charge for unlockable packs that'll keep you coming back for more.

Lemmings
The PS3 version had some great maps, and even more terrific HD graphics. The PSP may lose some of the visual presentation of its big console counterpart, but we're more than certain players will appreciate the simple fun of a downloadable Lemmings title.