Tsk.
Actually, Castle of the Winds, Exile, Mordor, Nahlakh and Natuk was my only bets here.
You are too fast for me, Tom!
Also, I got your description,
Bugamn, but I cannot remember anything exactly like your game (even if Mordor is closest bet). What other features was here? 3D-view? Character windows? Inventory? Was monsters visible before fight, or it's strictly "enter room, have encounter" thing?