From Associated Content: "One of the great innovations of this last console generation was the ability to include true online cooperative play in so many games. Sure, we had Halo and Doom on the original Xbox, but the true golden age of co-op began with the Xbox 360.
Many great co-op games are available in the system's library, but there are ten that seem to stand above the rest. All of these games feature full a full cooperative campaign that is playable online (with one notable exception. If you and a friend are looking to have a great time playing together, look no further than these ten great games."