I have vague memories of a game I played on the Tandy Color Computer 2, probably around 1990 or so. The game was entirely done with line art, and involved navigating a maze that sprawled across the screen while picking up treasure and fighting monsters. The part which has stuck with me was that you had a selection of weapons and magic that you could pick up to fight with. My memories were that the magic included a lightning bolt and a fireball spell (depicted as 1 and 2 below), a bow-and-arrow (3 below) combination, and I think a spiked mace, which I vaguely recall as the spikes just being lines. I think combat might have consisted of bumping into the monsters and then looking to see what the random number generator said happened. You could only carry a limited number of items to fight with. I remember preferring the spells, but I don't know if that was because they were more effective, or just because I thought the spells were cool.
I think the color-scheme was monochrome and the keyboard was used to move, just orthogonal angles with the maze similarly being built of right-angles. I don't remember how much of the maze you could see at a time, but I think the view centered on the player character, and you could see a few squares in each direction. I don't remember how the player character or the monsters were depicted. I think the weapons and magic might have been pulled out of chests, and you had a choice of classes at the beginning. And I think you picked the weapon by number keys that were on the entries, which were at the top of the screen.