What are these different versions of Dark Castle?

* 1.1 and 1.2 are the original releases by Silicon Beach.
* 2.1 "Delta Tao" is a clean write of the image file contained on the original Delta Tao Dark Castle B&W disk.  Just copy the contents and you're ready to go.
* "B&W" is a complete image of the original Dark Castle B&W disk that you could optionally mail out for after purchasing Color Dark Castle.  WARNING:  The image file checksum does not match and may be corrupted.  However, no issues have been found.  This is how it originally shipped from Delta Tao.