Sorcery

Now this is a TOUGH game. I played it with my older brother in the late 80s and we just managed to free 2 or 3 caged monks (I think there were 8). Lovely and colorful graphics for a 32K game (I played it using a memory expansion cartridge on my 16K MSX). Unforgettable.

I particularly remember a version in which not al doors could be opened.