The Cutting Room Floor: Unearthing Unused Content from Video Games
This is pretty cool! Randomly came across this tidbit, regarding one of my favorite Apple II games: "While Karateka only takes up Side A, Side B contains a copy of the game modified to play upside-down. According to Jordan Mechner, this was a practical joke by Brøderbund so tech support could have the delight of telling someone that their game was upside-down because...they put the disc in upside-down. Duh."