I think it was 'AD&D' but you were this stick figure and you would fight things that looked like 'X' and 'A' and other letters, and treasure was like an 'o' and a sword was like a 't' but it wasn't text-based. I think they just drew the monsters and treasures with two strokes of the light-pen.
Anyway, I'm going to bed now since I finally got tired.
Anyway, I'm going to bed now since I finally got tired.