PlayStation Plus members in Europe are ending 2012 in style with the addition of Batman: Arkham City, Vanquish, and Limbo to the service's Instant Game Collection. The shadowy trio all become available on December 5, while Mortal Kombat Vita steals the month's portable limelight on December 19.

Two newly launched games are also in next month's Instant Collection, both available on PS3 and Vita. The first is Big Sky Infinity, a port of Boss Baddie's PC release Really Big Sky. The luminous twin-stick shooter comes to Europe's PSN on December 12. Second up is Knytt Underground, the next chromatic platformer in Nicklas Nygren's 'Knytt' series, due on December 21.

On the get-it-while-you-still-can front, December also sees a few removals from the Euro Instant Game Collection. Crysis 2, Scott Pilgrim vs. The World and Double Dragon Neon all depart on December 5, Chronovolt rolls off on December 19, and Tales from Space: Mutant Blobs Attack rockets away on December 21. Get them before they disappear.