Despite receiving positive reviews from critics, Dead Space: Extraction's sales outlook wasn't quite as positive. This week, the on-rails shooter got a second shot at success, when the HD remix of the game landed on the Aussie PlayStation Network Store for A$23.95. Set before the first game, Extraction is an on-rails shooter that fills in the blanks between what happened when the mysterious marker was found and when Issac Clarke's ship answered the USG Ishimura's distress beacon. Aside from the scaled-up graphics, Dead Space: Extraction on the PlayStation 3 is identical to its Wii cousin, so you may want to think twice if you've already played it.

　　While Dead Space: Extraction might be exclusive to PS3, Xbox 360 owners get their own taste of exclusivity with Breach. Developed by Atomic Games, the guys behind the ill-fated Six Days in Fallujah, Breach is a modern-day online first-person shooter starring the CIA's Special Activities Division. If you're not too sure about shelling out the 1,200 Microsoft points for Breach, there's also a free demo available that'll let you get a feel for it.

　　And finally, it's another quiet week for Nintendo owners, with just one game being released across its three digital distribution services--Boom Boom Squaries for DSiWare. This one's a pretty simple puzzler, which sees players linking together explosions to wipe out as many squares on the screen as possible.

　　For the full list of PSN, XBLA, and DSiWare games that are out this week, check out the list below:

　　PSN:

　　Dead Space: Extraction - A$23.95

　　Dead Space: Extraction Trial - free

　　Bulletstorm demo - free

　　Tomb Raider: The Last Revelation (PlayStation Classic) - A$15.95

　　Denki Blocks (PSP Mini) - A$6.45

　　GreenTechPlus+ - A$4.95

　　XBLA:

　　Breach - 1,200 Microsoft points

　　Bulletstorm demo - free

　　DSiWare: Boom Boom Squaries - 200 Nintendo points