get Eye of the beholder at GOG.com now for some old school goodness https://www.gog.com/game/forgotten_realms_the_archives_collection_one ENDED!...
I played Eye of the Beholder on a 486 with a friend and we'd take turns between mapping dungeons on graph paper and controlling the PC. We never did manage to pass a certain level as we were unable to find a door to get lower. I can't remember the level but it's pretty deep and either there was a bug in our game or the doorway is hidden really, really well. I remember it was one of those levels where, when you hit certain squares, you're instantly teleported to another part of the map. VERY confusing!