We've got quite a few co-op titles out this week with just about something for everyone.
LEGO Harry Potter: Years 1-4 is out on the 360, PS3, Wii, and PC sporting 2 player local co-op throughout the entire story. It looks to continue the tradition of solid LEGO titles but adds in some nifty features like a variety of spells to cast. You can snag it right now on Amazon for and receive $10 in Video Game credit.
Ninety Nine Nights 2 hits the Xbox 360 this week with two player co-op missions over Xbox Live. N3II is all about scale and fast combat and it's a game that takes the Dynasty Warriors formula and adds a bit of maturity to it.
Sin and Punishment: Star Successor is out for the Nintendo Wii. Developed by Treasure, makers of Ikaruga and other popular SHMUPS, S&P2 is the sequel to the classic franchise reborn with the help of motion controls. The game features two player local co-op.