Med Systems Software was a very early software company that started out on the TRS-80 making first-person maze games. Most probably used a similar engine, and were an interesting combination of maze game and adventure. The great Jyym Pearson authored several of their titles. Their games had a tendency towards the strange, as the names might suggest. Later the company became or was bought by Screenplay, which went on to create the Warriors of Ras series, as well as a few more unusual adventure games, in the style of their predecessor.