Scooby-Doo and the Cyber Chase is a 2001 American direct-to-video animated science fiction comedy mystery film, and the fourth in a series of direct-to-video animated films based on the Scooby-Doo franchise. It was released on October 9, 2001. The film was produced by Hanna-Barbera Cartoons. In spite of its grimmer atmosphere, it also has a lighter tone, similar to its predecessor, Scooby-Doo and the Alien Invaders. It is the final Hanna-Barbera production to be executive produced by both William Hanna and Joseph Barbera before Hanna's death on March 22, 2001 and was dedicated in his memory. It is also the fourth and final Scooby-Doo direct-to-video film to be animated overseas by Japanese animation studio Mook Animation, and the first film to use digital ink and paint. This film, along with Aloha, Scooby-Doo!, was part of the first Scooby-Doo films to be re-released on Blu-ray on April 5, 2011. This was also the first film to feature Grey DeLisle as the voice of Daphne Blake after the death of Mary Kay Bergman in 1999. It was also the last film where Scott Innes voiced Scooby-Doo and Shaggy, as well as the last film where B. J. Ward voiced Velma. The Scooby-Doo direct-to-video films would not feature real supernatural creatures again until Scooby-Doo! and the Goblin King. Plot Mystery Inc. visits their old friend and college student, Eric, who has invited them to see a prize-winning computer game he made based on their adventures and a high-tech laser, both of which intends to enter at a campus science fair. Upon arrival, the gang learn a "Phantom Virus" materialized from Eric's game and attacked him before his teacher, Professor Kaufman, drove it off with a high-powered magnet and that it has been terrorizing the campus ever since. While investigating potential suspects Eric; Kaufman; Bill, Eric's best friend and baseball-loving programmer; and grumpy campus security guard, Officer Wembley, the gang encounter the Phantom Virus before someone uses Eric's laser to beam them all into his game, where the gang learn that they must complete every level by finding a box of Scooby Snax to get out of the game. Following initial difficulties in the first three levels, the gang progress quickly until they reach the final level, where they meet cyber-versions of themselves. After escaping from the Phantom Virus, the cyber-gang reveal that they know where to locate the final box of Scooby Snax,