Does the Crystal Caves source code still exist? I searched for it on Google, and this is all I found from an interview with creator Frank Maddin in 2005:
Is there a chance that the source code of
Crystal Caves and Secret Agent is going to be released?
I suppose there is always a chance, if I could find the pieces. And it would involve Apogee.
EDIT: After more thorough searching, I found these:
Welp, I guess that answers that.