Castleblanca Title Card.png
Original air date
January 22, 2002
Directed by
Larry Jacobs
Written by
Dan Elish
George Arthur Bloom
"Lost My Marbles"

"Castleblanca" is the second episode of the first season of Cyberchase. It originally aired on January 22, 2002.


Main Characters



Dr. Marbles is captured by Hacker and taken to Castleblanca, a Cyberspace version of Transylvania. Hacker’s goal: transfer Marbles’ brain power into his newly built robot named Megabyte! Summoned by Motherboard, the kids and Digit arrive with the knowledge that Hacker has taken Marbles to a castle, but which one? There are hundreds and hundreds of castles. To find Marbles, the kids must master the art of properly collecting data, organizing it and graphing the results — results that are sometimes surprising!



  • As the Cybersquad are talking to Motherboard towards the beginning of the episode, Inez and Jackie's voices are swapped.




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Castleblanca Title Card.png

External Links

PBS KIDS - Cyberchase Videos - Castleblanca

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