I've been reliving my childhood and playing with WinVice, a Commodore 64 emulator.
A friend and I were working on a game at the point the C64 died and it never got finished. We recently dusted off those old 5 1/4" disks and finally worked out how to get it working again! If anyone fancies taking a look you can find it here
Be warned though, it really was unfinished. Some rooms lead to dead-ends and there is no way to quit the game, so the occasional reset (of the C64) + reload is required!