Cranston Manor  Cranston Manor is a graphic adventure published for the Apple II by On-Line Systems in 1981. It is Hi-Res Adventure #3. The player must invade a mansion that was occupied by a millionaire and steal the sixteen treasures that are inside of it. The game allows players to switch between graphics-based and text-based gameplay. "Cranston Manor" is based on Larry Ledden's text adventure "The Cranston Manor Adventure". The graphical version was programmed by Ledden, Ken Williams, and Harold DeWitz. Larry Ledden wrote "The Cranston Manor Adventure" as text-only interactive fiction for the Atari 8-bit family. It was published by Artworx in 1981. Sierra On-Line acquired the rights from Ledden to create a graphical version which was published as "Cranston Manor" for the Apple II. Ledden was paid royalties, but did not receive credit in Sierra's version.