"Wizard Replay" is almost entirely the product of @a2_qkumba's genius. (He would deny this.) Wizardry was, perhaps infamously, written in a very early version of Apple Pascal. Wizard Replay is able to virtually mount and boot these unmodified Pascal disk images under ProDOS, including patching the p-code interpreter to seamlessly "swap" virtual disk images when the game expects you to switch from the program disk to the scenario disk.