- Oo-Topos (with Michael Berlyn, publisher: Sentient Software; 1986; Apple II, Commodore, MS-DOS).
- Tass Times in Tonetown (with Michael Berlyn; publisher: Activision; 1986). Graphic adventure game.
- Dr. Dumont's Wild P.A.R.T.I. (with Michael Berlyn; Z-code porters: Mark Musante and Gunther Schmidl; publishers: First Row Software; 1988; MS-DOS; Cascade Mountain Publishing; 1999; Z-code).