In Japan, Sega and Sonic Team collaborated with Studio Pierrot to produce a two-part original video animation (OVA), "Sonic the Hedgehog", released direct-to-video in Japan in 1996. To coincide with "Sonic Adventure" Western release in 1999, ADV Films released the OVA in North America as a 55-minute film, "Sonic the Hedgehog: The Movie". Produced with input from Naka and Ohshima, the OVA is loosely based on "Sonic CD," with elements from "Sonic the Hedgehog 2" and "3", and recounts Sonic's efforts to stop a generator taken over by Eggman from exploding and destroying their world. Patrick Lee of "The A.V. Club" said the OVA was "the only cartoon to adapt the look, sound, and feel of the "Sonic" games", with familiar scenes and music.