I remember wasting many valuable work hours playing a Dungeon crawling 2D game (B&W) on the old Mac Plus. It used the entire screen, and was made up of TILES, the staircases looked like pyramids, due to a faux 3D drawing style. I believe there were corners marked on the tiles, and characters etc. fit inside the tiles (even with corners).

I believe you also had a toolbox on the right-hand side, and you clicked a sword madly to attack what you were next to on the screen. Sound was very rudimentary, if at all. I think it was just the same beep repeated. You moved by clicking the direction you wanted to go - you could obviously only move in 8 directions because of the tiles metaphor.

Knowing my luck, it is probably called Dungeon, and I have looked at it 5 times without realising it.

Any and all help most appreciated...