Battlefield Heroes players may notice some strange looking humanoids walking around in-game, now that werewolves and vampires have been added to the mix.
However, these humanly-challenged characters will only be around for one month.
The micro-payment event allows you to pay to "be able to rise again in the night maps" of the game (thanks, RPS), where once-dead Nationals can turn themselves into vampires and Royals can become werewolves.
There's a video of this in action through the link up there, and more information on pricing and the like can be found on the official site.
It was announced last month that the game had over 3 million registered players - so expect to see quite a few fanged characters running about for a while yet.