Zombie Army Trilogy [Online Game Code] Experience THREE nerve-shredding campaigns across FIFTEEN missions of intense third-person action. Take the fight to the undead alone, or team up in 2-4 player online co-op. Face your fears in the brutal new Horde Mode for 1-4 players, across 5 blood-curdling maps. Wince as your bullets shred the insides of the undead in gruesome detail with the return of the series' acclaimed X-ray Kill Camera. Play your favourite missions from ANY campaign in ANY order in ONE unified online community.