The 1983 MS-DOS version of Beam Software‘s classic text adventure, The Hobbit, allows you to choose between 40 or 80 column display for the text parser, and whether you want to play the game with pictures or not.
Since the DOS version of The Hobbit uses only four-colour CGA graphics, the pictures in this are not as well-drawn or as interesting as in the original Spectrum version. Which is disappointing.
Typing into the text parser in the DOS version is great, though, because a PC keyboard is so much faster and more responsive than a Speccy keyboard.
More: The Hobbit on Wikipedia