Why doesn't my joystick/gamepad work in GAME.EXE?
From OHRRPGCE-Wiki
The joystick/gamepad should work in the current version of the OHRRPGCE, unless you are using both a USB joystick and the DOS version of GAME.EXE. You can press Ctrl+J while playing to force joystick calibration, although this generally isn't necessary under windows. If you joystick does not work, please file a bug in bugzilla.