Neverwinter Nights works, but crashes immediately on startup about 30% of the time. Sometimes I need to relaunch it 3 or 4 times before it will run normally.
Legend of Grimrock appeared to run normally, but defaulted to settings that made some aspects unplayable. I used to play Dungeon Master often, and so I expected a fairly slow movement rate. There was nothing to indicate that the game was not running normally, but timed puzzles were initially completely frustrating, and later impossible. So I consider that it didn't work properly as installed. (It's not simply a settings issue. The game is fairly unique that there is no reasonable feedback to indicate that your settings may be off. Plus, I had no reason to believe a fairly modern machine would choke on a high-res Eye of the Beholder.)