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Like the first three Shrek films, the movie is based on fairy tale themes. The trailer was attached with Avatar. The second trailer was released online on March 12, 2010 and then attached with 3D showings of Alice in Wonderland and then with How to Train Your Dragon. The film has received critically mixed reviews with several critics claiming that the film is better than Shrek The Third but does not live up to the instant success compared to Shrek and Shrek 2. |