"Total Eclipse" was a 3Dgraphic adventure made by Incentive Software in 1986...
It used the "Freescape" technique.

I just saw it has been remade using solid 3d and for retro fans a "must-see". It is totally "freeware" with no ads, popups or limitations.

http://eclipse.ovine.net/

download link:
http://eclipse.ovine.net/download.php

See also:
http://ovine.net/

Very nice game.

catventure.