 Differences in two weapons in the film include that the revolver in  the board game is most commonly a pepperbox revolver (an early 1800s  revolver with the six bullet chambers jutting out from the main gun  parts). However, it is changed to a regular .38 caliber revolver to  possibly keep up with the modern time period the film is set in. The  lead pipe in the game was also bent at an angle, to emphasize the  fact that it was (possibly) used in Mr. Boddys murder; the film  shows it completely straight.