I loved that game as a kid.
I still have the 4 figures that came with it, and use them as D&D figs, since the tower broke long ago.
And, you kinda need the tower to play, since it runs all the battles, and tells if you find treasures, such as the keys you neeed to get into the Dark Tower itself.
Ah, playing the flash version brings back the memories.
http://www.hotflashgames.com/darktower.htm
Another game I owned as child, that I would kill to own again was "Talisman". I loved and adored this game. I then loaned it to a friend who moved, and never saw it again. I saw one for sale a few years later, that was the same as my old one, (2nd Edition) in a gaming store behind the counter. I asked the clerk how much it was. He told me it was $300!!!
So, Hawk, you're not the only one who wants to play old childhood boardgames, that now cost a fortune.