A free, sample-size version of Call of Duty: Infinite Warfare will be available to play between 15 and 20 December, if that’s something you fancy doing. All three modes (single player, multiplayer, zombies) will be included, though with various restrictions on each.
In single player, you’ll be able to play the first two missions: “Rising Threat” and “Black Sky”. Whether that means you’ll get far enough to say hello to Jon Snow, I’m not sure. As far as multiplayer is concerned, you can play up to a level cap of 15. With zombies, that level cap is 3.
Any progress you make during the freebie trial will carry over, however. So if you then decide to buy the whole thing you’ll keep your levelling.