Call of Duty: Ghosts started out pretty damn poorly, but over the course of its three DLC packs, it's become a much better game overall. The newest add-on is Invasion, which is one of the best Call of Duty DLCs to date, and really spices the game up quite a bit.
If you were out of the action due to its Xbox timed exclusivity, you'll be able to pick it up on July 3rd -- at which point it'll hit the PS3, PS4, and PC. It's really unfortunate that the Wii U is getting such terrible support, as there's no word on any of the DLCs for that platform.
This 2015 D.I.C.E. Summit talk explains the entire history of Call of Duty's zombie mode
10:30 AM on 02.12.2015
Call of Duty unleashes DLC, zombie horde on PlayStation and PC in late February
5:00 PM on 02.04.2015