It's a big week for PS3 content on the PlayStation Store. XCOM: Enemy Within makes its debut on PS3 today, as does the latest entry in the Ratchet & Clank series, Ratchet & Clank: Into the Nexus, from Insomniac Games.

Two new Wonderbook adventures, Diggs Nightcrawler and Walking With Dinosaurs, are also available today, as is Injustice: Gods Among Us Ultimate Edition and a special everything-but-the-kitchen-sink version of Grid 2. The first episode of BioShock Infinite's Burial at Sea DLC is also up for grabs.

Ibb and Obb is free on PS3 for PS Plus members, who will find a new plethora of deals to sift through on PSN this week. Highlights include cheap fighters like Divekick and Street Fighter X Tekken, plus Ubisoft franchises such as Scott Pilgrim, Beyond Good & Evil HD and From Dust.

This article was originally published on Joystiq.