Four (http://www.gog.com/en/gamecard/ultima_4/), Savage Empire (http://www.gog.com/en/gamecard/worlds_of_ultima_the_savage_empire/), and Martian Dreams (http://www.gog.com/en/gamecard/ultima_worlds_of_adventure_2_martian_dreams/)
In case anyone was interested.
Free? :D Excellent. :D