Citizens on the Mountaintop: The Story of the Civil War Amendments

This is a great use of the Quest engine for CYOA masquerading as a correctional class to teach you about corporate personhood. I almost don't think I was smart enough to play the game, but it's a very tongue-in-cheek and surprisingly-well researched fractured history lesson.

And there's a scene where you play Supreme Court Justice Clarence Thomas as he tumbles down a slide into the National Archive.