Chipmunks Meet Frankenstein is an animated horror-themed direct-to-video film, produced by Bagdasarian Productions and Universal Animation Studios, distributed by Universal Studios Home Entertainment, and loosely based on characters from Alvin and the Chipmunks. It is the sequel to The Chipmunk Adventure and was released on VHS in 1999 and DVD (as a "Monster Pack" with Alvin and the Chipmunks Meet the Wolfman, Monster Mash, and four episodes of Archie's Weird Mysteries) in 2004 by Universal Studios Home Entertainment. A Scare-riffic Double Feature DVD featuring this film and Alvin and the Chipmunks Meet the Wolfman was released on September 4, 2007. When the Chipmunks are in the roller coaster and it is going at a faster speed than normal, they first have looks of fright on their faces. Then they turn into themselves as Ross Bagdasarian drew them in The Alvin Show, then they turn into drawings of chipmunks, and then back to their original selves. Simon wears black glasses instead of blue. In old pictures, Dave reveals that Alvin once set the kitchen on fire, trying to make him a Father's Day breakfast, and set the lab rats free at school. It's a Halloween movie and was released on Halloween.