When Teenage Mutant Ninja Turtles: The Cowabunga Collection launched earlier this year, 6 out of the 13 included games featured online multiplayer. That number has now increased by one thanks to this week's huge update. The update adds 2-player online co-op to the Super Nintendo version of TMNT: Turtles in Time as well as numerous new options and enhancements to other parts of the collection. It's going to be a cowabunga-cool Christmas for Turtles fans!

Arcade1Up has made it possible for nostalgic gamers to build their own arcades at home thanks to its ever-growing line of 3/4-scale arcade cabinets. Today, the company announced a Teenage Mutant Ninja Turtles: Turtles in Time cabinet as well as the Street Fighter II Big Blue Arcade Machine, which counts a handful of co-op classics among its roster.

There's a lot of co-op love in XBLA's Deal of the Week sale!  Four out of the five games feature co-op.  Hard Corps: Uprising, X-men Arcade, Lara Croft and the Guardian of Light, and Teenage Mutant Ninja Turtles: Turtles in Time Reshelled are all 50% off.  These four games have an average score of 4 out of 5 in our Co-Op reviews. Comic Jumper, and excellent single player game, is also for sale for half price.