A box Design of Crystal Castle was found by Curt Vendel of the Atari atarimuseum.com and it posted at Atariage. Here is the link to it: http://www.atariage.com/forums/index...owtopic=119614
You have be a member of Atariage to see the picture of the design.
I couldn't attach the design to the thread due to size of the picture and how much memory it took up. It takes up 591.52 K
The game itself was not found yet. Hopefully it will be found.
Curt said the copyright date is 1988. Curt is now trying to found out who might've been the programmer.