Crusader Kings 2 mod brings zombies to the middle ages
You see folks, this is why April Fools' Day is dangerous. Or awesome. Delete depending on your affinity for zombies. Back in the dark ages of seven and a bit months ago, Paradox Interactive released a teaser for a fictional Crusader Kings Z, a game that hypothetically merged zombie invasions with medieval European strategy. Months later, and that joke is now a real thing that you can play in Crusader Kings 2. Thanks mods!
For those who've played Sunset Invasion, Paradox's own alternate history add-on, Crusader Kings Z follows a similar pattern. At some point past the year 1000 AD, an event will trigger that unleashes a zombie horde in Ethiopia. From there they build in strength and numbers, spreading from Africa to Europe. It's your job to build a big enough army to stop them, all while stopping your dick half-brother from poisoning you. Just because there are zombies, that's no reason for regal intrigue to cease.
It's a small but enjoyable mod, with an understandably significant impact on campaigns. You can download Crusader Kings Z from here, although you'll need a Paradox forum account to access the page.