Well, Mike, my take on Welles' mind is that he constantly delved into his past works and life experiences to find projects which appealed to him. If I'm right, the Dark Tower game commercial would have stood out among pocket change opportunities because he had done this little Suspense show earlier. We might note, too, that he constantly came back to the theatrical theme of "The Dark Tower," poking fun at himself, from childhood on.
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And Jay, here is a listing of the Suspense shows credited to Welles:
"Orson Welles guest stars on the long-running thriller. [Suspense ran hundreds of shows over many years.] Included is Welles' parody of Donovan's Brain.
" Suspense (CBS)
directors: William N. Robeson, William Spier
music: Bernard Herrmann
"The Hitchhiker by Lucille Fletcher
The Most Dangerous Game by Richard Connell
The Lost Special by Arthur Conan Doyle
Philomel Cottage by Agatha Christie
Lazarus Walks by Robert Richards
The Marvelous Barastro by Ben Hecht
The Dark Tower by Alexander Woollcott and George S. Kaufman
Donovan's Brain by Curt Siodmak"
It's not so amazing that I know about these shows because I heard most of them when they were first presented on Radio, and so, I know what to look for now. You may download them, Jay, for free at this same site: http://www.archive.org/details/OrsonWellesOnSuspense