The plot of The Black Sanctum: "Encounter the forces of black magic as you roam around an old 18th century monastery. See all the evil locations in this spooky adventure in full hi-res detail. If you like suspense, you'll love searching out and destroying the evil in this classic tale."
Thanks to the generosity of Bob Withers, co-creator of these underdogs who put both the games and their source codes up on his website for free download, you can now experience a forgotten past of the early days of adventure gaming. All are recommended, but if you want the best of the bunch, I highly recommend my personal favorites: Trekboer and Calixto Island.