A hint book, entitled "Guide to the Palace - Lost notes of the Great One", was available through mail-order for $5.
The game's GSWindows interface, apparently repurposed for CliffyB's next game, Dare to Dream, uses CCFCURS.DLL and CCFMOUSE.VBX from Desaware.
In the game's documentation, the 17-year-old author helpfully notes that "Dragon's Plight runs best on a 20Mhz 386 machine. If your machine is 16,10, or 8 mhz, it will run very slow." Later, while pleading for registration, he sees his own future: "If you register this game, not only will you get a great product and a company who stands behind it, you will help me to join a company like Sierra or Lucasfilm to make the greatest games ever someday." Those titans have fallen, but the foot in the door at Epic this game represented still seems to be serving him well!
The Berry family not only provided the game with free labour (game testers), but the family business apparently sponsored the game's development in exchange for an ad in the game's documentation for Berry Computing and Design of 512 E. Cypress Ave., Glendora, CA 91740.