The single player campaign for Activision's recent first-person shooter Call of Duty: Modern Warfare III has been slammed by both game critics and players, perhaps because it was reportedly developed and completed in only 16 months. However, the multiplayer portions of the game have fared better in terms of their reviews. Today, Activision announced it will allow anyone with a compatible PC, and a Xbox and PS5 console, to check out some of the multiplayer content in Modern Warfare III for free, starting at 10 am Pacific time on December 14 and ending at 10 am Pacific time on December 18. In a blog post, Activision stated that the free play period will include access to the co-op themed Zombies mode, which lets players try to fight off the undead and keep them from getting out of the Exclusion Zone. Those free players will also be able to check out the new objective team-based War mode. The offensive team has to destroy a SAM missile site and its radar hardware, then escort a tank through some dangerous territory and finally upload codes to keep a big missile from firing. The opposing team, of course, has to keep the offensive team from achieving these objectives.