I also have a file that you can use if you have the registered 6 episode version of the original Wolfenstein 3D. This modification comes from Steven Pappas, and it changes Episode 1 Level 10 (the secret level) to be "The Well of Wishes". Some of the characters are replaced with a Dopefish (which appears to be a boss character transplant, as it's rather lethal). You candownload the file here - unpack to your registered Wolf3D directory and enjoy. You can also check out a screen capture of this modification on this page, and a few othershere, here,here, & here.
The 4th episode of the commander keen games is called Secret of the Oracle. It belongs to the second keen serie "Goodbye Galaxy!". This serie includes also another keen game, The Armageddon Machine, which is not shareware. Billy has been working on a new invention in this episode. His latest invention is the Photachyon Tranceiver, a radio that can reviece signals from anywhere in the galaxy. 2b1af7f3a8