3DO Game Guru

The Game Guru is an interesting cheat device in the sense that there's a lot more things available than your standard Game Genie or Action Replay. Sadly, it could only edit save files...and was for the 3DO.

Developer Video
After using the Game Guru to patch GameGuru.cfg with the code IHAVETHEVIDEO2, the game goes to this half-sized FMV of one of the developers giving a tour of their house/development studio.

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