Overlord II comes out today on the Xbox 360, PlayStation 3 and PC. The game places players in the role of an Evil Overlord, who while in control of his minions, is capable of creating havok across the land. It's an over the top game that's incredibly entertaining, filled with a ton of personality.
There's a two player online co-op mode which features a few scenarios. The first Arena mode sounds a bit like the ever popular Horde modes we are seeing in games. Kill A General has players working together across lands to, yup, defeat a general.