I found a Window's port of The Wizard's Castle, a program originally written in BASIC known as castle.bas that I remember fondly playing in my youth. I have yet to poke with it long enough to remember all the funny things that happen (i.e. the Blue Flame which dissolves books that are stuck to your hands), but am glad to find that this fun game won't die for a little while longer.
Thanks to Derelict for porting this game. I dropped him an e-mail, and he responded within a few minutes! How's that for service?