Dead Island's almost certainly the surprise success of the year.

Despite launching with a slew of snags, the morbid Techland developed zombie slasher has shipped a whopping three million units worldwide.

Deep Silver's manager of marketing and PR, Aubrey Norris, revealed the news to Game Informer: "Dead Island has sold very, very well over the holiday season and we are thrilled that it has sustained a robust level of sell-through since launch in September," she said.

Norris didn't provide any sell-through numbers, but it's safe to assume that copies are moving otherwise retailers wouldn't be ordering more. And people say they're bored of zombies.