Tower of Fear is one of the most logical text adventure games that I have played... there is nothing in this game that is so "out there" that you can't solve with plain common sense. It has a single graphics screen at the beginning as part of the credits, but other than that it is plain text (although, within a scrolling window. I believe that this was Charles Forsythe's (and The Programmer's Guild's) first commercial game.
Title: Tower of Fear
Author: Charles Forsythe
Publisher: Programmer's Guild
Released: Late 1981 or early 1982
Requires: Color Computer 1,2,3, 16K RAM Extended BASIC, cassette or disk.