From their announcement:
It’s the first of December, which can mean only one thing… it’s the start of the Twelve Tweets of Christmas!
This competition is dead simple – we’ll tweet every day, for twelve days. All you have to do is tell us whether the statements are true or false. Collect all the answers in one email and send it into us by the 16th December and the person who gets the most right wins themself a very special prize. We’re going to be giving away a print of the original concept art of the Corporation Major-General signed by Mike McVey:
For details, check out www.manticblog.com