Excellent game, wanted a WiiU just to play this. Excellent use of gamepad abilities, you have to organise your gear on the gamepad while keeping an eye on the main screen for Zombies. It's set in London, and shows excellent attention to detail and wonderful ambience and authenticity of surroundings. Personally, i found this game scarier than Dead Space, to the point where i can't play it for long. Death is a very scary prospect as you lose your score when you die, as well as any gear you were carrying and all your skills the character may have developed.
Get stuck? hit pause, miiverse, and ask a fellow player how to proceed, within minutes you'll have an answer.
This game is not without a few glitches and niggles, but these rarely detract from the gameplay and enjoyment.
In summary WiiU's killer app.