No one mentioned Zork?
Zork. We had it on the Commodore 64 and I would spend every available minute in that incredible world with my trusty game guide at the ready. The "game guide" being the directions for getting to the Thief's lair in the maze.
I would set the border to black, the main desktop space to black, and the text to white, and just disappear into literally the greatest graphics of any game in human history, text-based adventure or otherwise.