Ratchet & Clank Future: Quest for Booty Sony | for the PlayStation 3 | $15
At the end of last year's Tools of Destruction, Clank disappeared with a tribe of his fellow robots. As this new chapter begins, Ratchet (the furry half of the duo) discovers that the pirate Captain Darkwater may know where Clank went. Unfortunately, Darkwater is dead, so Ratchet must search for the scurvy seadog's treasure to find a clue.

Quest for Booty plays like a stripped-down version of its predecessor, leaving out all the side missions and minigames in favor of straight-ahead action. There are still plenty of nifty puzzles and running-and-jumping action, though, so things never slow down.

PixelJunk Eden Sony | for the PlayStation 3 | $10
The Kyoto, Japan-based Q-Games has released three very different titles for the PlayStation Network: the slot-car game PixelJunk Racers, the strategy game PixelJunk Monsters and the uncategorizable PixelJunk Eden, which looks like no game you've ever seen before.

Each level begins in an underpopulated garden with a minuscule hero who can swing and jump from leaf to leaf. When he swings into a "prowler," it releases pollen, which helps more plants grow. The goal is to grow the plants high enough to reach the prized "Spectra."

Its controls take some getting used to.

Siren: Blood Curse
Sony | for the PlayStation 3 | $15 for four episodes | $40 for 12 episodes

Sony has retooled the overlooked 2004 title Siren and chopped it up into a dozen chapters. The graphics aren't much better than they were in the PlayStation 3, but the developers have tightened up the gameplay.

In the first episode, a U.S. camera crew stumbles across a Japanese village populated by zombies, and you briefly assume the role of a college student who's trying to escape from an undead cop.

It's an effective survival horror adventure, but the episodic structure doesn't help, mainly because the individual chapters take so long to download and install.