Mastermind is a copy of the classic game by Pressman (Hasbro for PC). Here you can play against the computer or a second player. Unfortunately there does not seem to be any option to use a mouse so you have to use the keyboard to do everything. ALSO! You MUST go to the commandline and use commandline switches to play this game! Just running it from Windows Explorer WILL NOT WORK. ;) Try "mmind" at the DOS (or DOSBox) prompt to get a list of options or "mmind /d" to use the defaults and play a "medium difficulty" game against the computer.