Much like Horde mode on Gears of War 2 or Firefight from Halo 3: ODST, EA has adopted the cooperative team-play feature for the upcoming Army of Two: The 40th Day. The new trailer showcases the four-player cooperative feature against the numerous waves of enemies and it definitely looks like fun.

Up to four-players can battle it out with wave-after-wave of enemy combatants and the best part about it is that players get to use all their custom gear. What’s more is that this mode will be exclusively free-to-play for an entire month for gamers who pre-order Army of Two: The 40th Day.

You can check out the new video below, which is pretty cool….especially the player with the demented, awesome looking happy smiley face mask. For more info on the game feel free to visit the Official Army of Two Website or check out previous Blend Games assets and coverage of Army of Two right here.