Okay, I'm not sure if this is the proper forum (thought about putting it in General Emulation) but here goes:

I'm looking for an old c64 game from my childhood (or more accurately, my brother's childhood) Unfortunatly I only remember two things about it:

It was a first person (i think) maze like game, that took place in a cave.

And the most distinctive memory being a monster that hums the Mr. Sandman song (bum bum bum bum bum bum bum etc)

Unfortunatly that's the extent of what I remember. Anyone know what game this is? Any help would be appreciated, thanks. I'm looking through the c64 game list as I type this trying to find a familiar title or screenshot..