2: Monsters Unleashed (2004) Scooby-Doo! The Mystery Begins (2009, telefilm) Scooby-Doo! Curse of the Lake Monster (2010, telefilm) Video games Scooby-Doo , a 1986 arcade computer game published by Elite Systems (later re-released on Elite’s budget label Encore) and developed by Gargoyle Games for the ZX Spectrum and Commodore 64 . Scooby-Doo