Like This, But With Added Zombie Hordes.

The pack, which is set to bring zombies to the Westerner, will mostly contain single-player content, and will see protagonist John Marston trying to find a cure for “highly infectious zombie plague that has spread across the frontier”.

The pack will feature new gameplay mechanics, weapons, animals and a new location. Rockstar will also be adding in a new multiplayer mode.

The pack will cost $9.99. It's rumoured that it will release on Halowe'en week, though there's been no confirmation of that as of yet.