Backbone Entertainment's 1942: Joint Strike makes its PlayStation 3 debut today, following its Xbox 360 release earlier this week. Priced at $9.99, the top-down shooter revival offers updated 3D HD graphics, new weapons and online cooperative play.

The episodic survival horror game Siren: Blood Curse is now available. A reimagining of SCE Japan Studio's Siren (PS2), Blood Curse is broken into three bundles of four episodes a piece, priced at $14.99 per bundle or $39.99 for the complete twelve-episode saga.

A downloadable demo of Q-Games' Pixeljunk Eden has appeared on the digital storefront as a free download. Described by the developer as an "organic platformer," the title is slated for release next Thursday, July 31.

A complete rundown of the new content is viewable below.

From the PlayStation.Blog:

Summer 08 Game Sale
For one week, the following titles will be offered for $4.99 (regularly priced at $9.99)

• PAIN
• PixelJunk Monsters
• High Velocity Bowling
• High Stakes on the Vegas Strip: Poker Edition
• Rocketmen: Axis of Evil

Downloadable Games

Siren: Blood Curse (3 bundles of 4 episodes @ $14.99/ea, full game SKU for $39.99)
An American TV crew has arrived in Japan to film an expose on the legend of the "vanished village," only to find themselves caught in a deadly series of events. Controlling seven different playable characters, the player must uncover the mystery behind the curse that grips the eerie village of Hanuda. Intense graphics, realistic character animation, and a gritty film-like graphical presentation add to the horror of Siren: Blood Curse.
ESRB Rated M
File sizes: Episodes 1 - 12 (8.91 GB), Episodes 1 - 4 (2.95 GB), Episodes 5 - 8 (2.79 GB), Episodes 9 -12 (3.16 GB)

1942: Joint Strike ($9.99)
Based on the popular arcade series, 1942: Joint Strike combines classic top-down shooting with amazing 3D HD graphics. Maneuver aircraft carriers to take on waves of enemy fire and face off with huge enemy bosses. Recruit a wing man locally or online to employ Joint Strike attacks, combining firepower into one explosive barrage. With a whole new arsenal, prepare to rejoin the battle!
ESRB Rated T
File size: 129 MB

Add-on Game Content

Guitar Hero III: Guitar Virtuoso Pack ($6.25)
Three pack download containing the songs "Surfing with the Alien" as performed by Joe Satriani, "For the Love of God" as performed by Steve Vai, "Soothsayer" as performed by Buckethead.
File size: 56.1 MB

Rock Band Add-ons
Build your Rock Band library by purchasing these song game tracks. For song credits, visit www.RockBand.com.

• Devour - Shinedown ($1.99)
• Junkies for Fame - Shinedown ($1.99)
• Nine Inch Nails Track Pack 02 ($5.49 includes songs below or songs available individually)
• Last - Nine Inch Nails ($1.99)
• Burn - Nine Inch Nails ($1.99)
• Capital G - Nine Inch Nails ($1.99)

File sizes: 25.2 MB - 44.1 MB

Game Demos (free)

PixelJunk Eden Demo
PixelJunk Eden is an organic platformer that sees you take control of a little "grimp", swinging and jumping between tall alien plants, and collecting pollen to grow more life. Lush visuals, slick controls and amazing music make it an incredibly atmospheric and addictive experience. Download the demo today and prepare to enter Eden!
File size: 107 MB

PLAYSTATION Store for PC

Parappa the Rapper ($22.99)
The "Original" music game comes back for a PSP system encore! Join Parappa and learn how to flow from the "Rap Masters" to become a true Hip Hop Hero! Hit buttons to the beat of all 6 original songs that made Parappa an instant classic and discover all new PSP exclusive features including Ad-Hoc Multiplayer and Downloadable Remixes!
File size: 312 MB