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.
There also seems to be 2 versions, which are actually presented fairly differently, with different intro screens and text screen colors. The earlier version (at the top above) also had a brooding bit of theme music and was still a listable BASIC program (with some ML subroutines for partial screen scrolling). The second version featured a much more colorful intro screen (but no theme music), inverted text and save/load a game in progress options. It also came as a BIN file.
Title: Tower of Fear
Author: Charles Forsythe
Publisher: Programmer's Guild (also sold by Instant Software)
Released: March 1982
Requires: Color Computer 1,2,3, 16K RAM Extended BASIC (cassette), or 32K RAM Extended BASIC (disk).
Download CHARLESFORSYTHE.ZIP (DSK image includes both versions of Tower of Fear, amongst others).