Call of Duty fans can now take their bloodlust on the road thanks to today's release of Call of Duty: World at War: Zombies for the iPhone and iPod Touch.

The mobile app, announced today by Activision, allows bloodthirsty gamers to enjoy the hit zombie-slaying gameplay mode from Treyarch's blockbuster title Call of Duty: World at War. It offers both single player and co-op gameplay in 3D, allowing up to four players to join a game via Wi-Fi, locally or across the internet, and up to two players via Bluetooth.

Treyarch studio head Mark Lamia said Call of Duty: World at War: Zombies would allow gamers to "to take the fight against the Zombie masses" wherever they went.

"Zombies is a single player and co-op gameplay mode that people from all over the world have enjoyed playing and have spent countless hours conquering limitless waves of Zombies."

The app can be purchased from Apple's App Store for $14.