Activision has released Call of Duty: World at War: Zombies on the iPhone and iPod Touch at a fleshy price of £5.99. That's almost as expensive as the Eurogamer App. [I think you mean "great value" - Ed.]
The App recreates World at War's console co-op mode where teams of four battle waves of Nazi undead. Stuffing all that onto the iPhone is a tall task but to Activision's credit the comments are positive and the goals have been achieved - reports of outstanding graphics and smooth gameplay are common.
Couple that with four-player Wi-Fi/Internet co-op or Bluetooth teams of two and Zombies is a hot, albeit pricey, prospect.
Head over to the Call of Duty: World at War: Zombies iPhone App Store page for more info and to buy.