Polygon ranks Ultima Underworld as #180 in their ongoing 500 Best Games of All Time list. Not bad for a game that came out in 1992:
http://steamcommunity.com/sharedfiles/filedetails/?id=1219266079
Check out their top 500 here:
https://www.polygon.com/features/2017/12/1/16707720/the-500-best-games-of-all-time-100-1