Developer Activision has also mentioned that users playing the game for the first time will be able to carry forward their progress from the free trial mode after it has ended. However, users will not be able to play the single-player campaign mode during the free trial period. The free access will be available for players across multiple platforms. Call of Duty: Back Ops Cold War is giving its players an opportunity to try out its Multiplayer and Zombies mode for free for a total of eight days.