and the UK. Super Top Trump Cards A number of Top Trumps packs have Super Top Trump (STT) cards issued for them, also known as Supercards in the United States. These cards are not available with the original pack, but are found in related merchandise, events or promotions, and sometimes made available in booster packs of 2–10 cards. For example, the popular US television series 24 has a Top Trumps pack available, but its STT card is only available with the purchase of special-stickered season 4 of 24 DVDs. STT cards for the Doctor Who deck were only available with the purchase of season 2, 3 and 4 DVDs. One other Doctor Who Super Top Trump card was released with a very special edition of the Beano magazine. A number of STT cards were made available free of charge to members of the Top Trumps club through its website, prior to 2006. Some STT cards are rarer than others. Most of the STT cards made available via the web tend to be relatively common, although some earlier ones from popular pack titles, such as the Nazgûl (from the Lord of the Rings series) can attract relatively high prices. Cards made available in other promotional ways can be exceptionally rare. An example is the "Grandmamma" STT card for the Roald Dahl pack. It was given out, free, to Scouts at a charity sleepover event in 2004. Very few of these are in circulation and they are difficult to obtain even through online auctions. Recently, several UK Super Top Trumps have been branded as "Supercards" as well. Top Trumps books In 2006, and working in conjunction with the Haynes publishing group, Winning Moves launched a line of books under the Top Trumps brand, based around the design and concept of the card game. The Books are often written by experts in their appropriate field. Subjects included sharks, Star Wars, Indiana Jones, Racing cars, Motorbikes, Fighter Aircraft, Cars, Doctor Who (Series 1 and 2 together, and Series 3 & 4), Dinosaurs, Airliners, Marvel Heroes, Animals, Tanks, Transformers and Football. Top Trumps LIVE A number of card sets can be played online against a computer opponent at the Winning Moves web sites, including two sets which is unavailable in shops. Games made include: Horror, Skyscrapers, ODI Stars (Unavailable as packs), World Football Stars, NBA 2K9, Sharks and Star Wars, Armchair General (Unavailable as packs)