sentences:  All three volumes contain animatics, Irken subtitles and digitally restored and remastered picture and sound.They also include audio commentaries for the majority of episodes, exclusive interviews with the voice actors, writers, and the post production staff and the series pilot.A box set shaped like Zim's house, known as the "House Box Set" has also been released, which includes all three volumes, plus an extra disc for bonus features, which includes the uncut version of "The Most Horrible X-Mas Ever", voice recordings for seven of the unfinished episodes, interviews with Kevin Manthei on the sound design and music of "Invader Zim", and a soundtrack of Kevin Manthei's main compositions for the show.