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Sony Pictures Home Entertainment has announced that a Blu-ray boxed set of the “Underworld” movies will be released on December 20.

Dubbed “The Underworld Trilogy: The Essential Collection,” the box set will include all three movies — incuding an extended, unrated version of the first film — a previously unseen three-part anime series called “Underworld: Endless War,” and two tickets for the fourth movie, “Underworld: Awakening,” which hits theaters on January 20, 2012.

The box will also include the extras previously included with the individual films, which includes commentaries, multiple making-of featurettes, outtakes, and music videos.

The collection will retail for $45.99.