Trust & Betrayal: The Legacy of Siboot, often abbreviated simply to Siboot, was a game designed and programmed by Chris Crawford for the Macintosh and published by Mindscape in 1987.

Christopher Crawford is an American video game designer and writer. Hired by Alan Kay to work at Atari, Inc., he wrote the computer wargame Eastern Front (1941) for Atari 8-bit computers which was sold through the Atari Program Exchange and later Atari's official product line. After leaving Atari, he wrote a string of games beginning with Balance of Power for Macintosh. Writing about the process of developing games, he became known among other creators in the nascent home computer game industry for his passionate advocacy of game design as an art form. He self-published The Journal of Computer Game Design and founded the Computer Game Developers Conference.