If you have been unsure whether or not to get Call of Duty: Infinite Warfare, Activision is trying to change your mind with a free trial event for the game which will offer all three of the main game modes for free for a short time.
For the campaign, you will be able to try out the first two levels in the game "Rising Threat" and "Black Sky". Multiplayer is fully playable as well but will have a level cap of 15 as will zombies in spaceland but with a level cap of 3. If you decide to purchase the game afterwards, your story progress and experience will carry over.
The event will run from December 15th at 10AM PST to December 20th at 10AM PST.
In my review, I personally found the single player campaign and the zombies mode really enjoyable, but this years online multiplayer offering was severely lacking.