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A trial version of a video game that precedes the release of the full version. Derived from the term "pilot episode", or an episode that serves to launch a television program.
The first pilot disk, made for the PC Engine version of Snatcher in 1992, was also released shortly before the full version. It was produced in limited quantities, making it a collector's item for hardcore fans.
The Policenauts pilot disk for the 3DO is Konami's second pilot disk. More than just a demo of the game, it is an interactive database, containing sketches and designs, behind-the-scenes looks at the game, interviews, and a glossary of the game's technical terminology.