I used to play this game as a kid on a TRS-80 Color Computer that my grandparents bought for me. Dungeons of Daggorath, and the TRS-80 were the beginning of my knowledge in computers. I never did very well playing this game, but then, I could barely read the instruction book. I also used to love playing Color Baseball and Downland (level 8 was my personal best). Downland was a lot like Super Mario Brothers for Nintendo except in Downland a distant fall to the ground would result in death (no power-ups either). Once Nintendo arrived on the scene games like this were left in the dust, but I have to give credit to the influence these games were likely to have had on the computer gaming industry.
The TRS-80 was a great learning aid. When I was not playing games, I was trying to write computer programs to make games with a spiderman programming book that I had. I was probably about 5 at the time. It is hard to remember, but based on what I know now, OS resembled DOS and seemed to respond to visual basic commands.
It is almost sad to see how difficult it is becoming to find information about these old games on the web.