The live action scenes were filmed in Montreal in 2000, under the working title "The Forgotten Attic."
This is the first title to be released in theaters and direct-to-video. Another title, DreamWorks Trolls World Tour (2020), which was released 11 years later, takes a similar approach on the releasing device, but with Direct-to-Digital instead.
The animation is produced from September 2007 to January 2008.
This is the first hybrid version of the story. The second will be the upcoming TV special, to be produced by Magic Circle Pictures.
The theatrical version is shown in theaters (on the limited theatrical release period) and on worldwide home media releases (excluding by FFfF themselves in N.A., including Anchor Bay Entertainment and Thomas Nelson in the U.S.), while the extended version is shown exclusively by Feature Films for Families on the FFfF DVD and their Digital service in North America.