IBM developed the DOS fantasy adventure game Zyll in 1984.
Zyll is currently abandonware, runs on DOS and can be played in a text-based perspective in single player, multiplayer (same or split screen) modes.
It's available for download.
Screenshots were taken by Abandonware DOS.
Facts, trivia and collector's notes are licensed under the GNU Free Documentation License. These texts use material from this Wikipedia article.
Zyll have a function key interface based on the arrangement of the keys on a PC/XT keyboard. In the same year of Zyll's release, IBM released new AT keyboards which changed the arrangement of the function keys by placing them at the top of the keyboard.
players: single player, multiplayer (same or split screen)
graphics: 80 columns text
Abandonware DOS popularity: low