Team Fortress 2 is getting Horde Mode!

Valve has announced that TF2 is getting co-op goodness in the form of Mann VS Machine.

Mann vs. Machine is a new co-operative game for Team Fortress 2 that lets you and five friends wage a desperate battle to stop a lethal horde of robots from deploying a bomb in one of Mann Co.’s many strongholds. Take advantage of breaks between waves to upgrade your abilities and weapons. Survive all the waves in any of a variety of missions to earn incredible loot. Mann VS Machine will be available Aug 15th.

this is so rad. read the comics on the MvM page, so awesome!