The Shrek franchise from DreamWorks Animation, based on William Steig's picture book with the same name, consists of four computer-animated films including: Shrek (2001), Shrek 2 (2004), Shrek the Third (2007), and Shrek Forever After (2010). A short 3D film, Shrek 4-D, which originally was a theme park ride, was released in 2003. Two television specials, the Christmas television special Shrek the Halls (2007) and the Halloween television special Scared Shrekless (2010), have also been produced. A spin-off film titled Puss in Boots was released in October 2011, and a 2008 Broadway musical adaption was produced for two years.