Tass Times in Tonetown is a 1986 adventure game by Activision. It was written by veteran Infocom designer Michael Berlyn and his long-time collaborator Muffy McClung Berlyn, and programmed by Bill Heineman of Interplay in cooperation with Brainwave Creations. Tass Times was released for the Atari ST, Amiga, Commodore 64, Apple II, Apple IIGS, Macintosh and IBM PC. It was the first commercial game for the IIGS.