can anyone help me remember the name of this game?

it was an old macintosh game, could have been elsewhere but that's where i played it.

it's just monochrome, i think. it's 2d and i think from a top-down perspective. it's a simple dungeon exploration game where you have to find keys to progress to the next area. i don't remember there being any sound but maybe we didn't have the right hardware for it.

it's definitely from before the year 2000, most likely from the late 80s or early 90s if i had to guess.