Tass Times in Tonetown is an adventure game published by Activision in 1986. It was designed by Michael Berlyn and Muffy McClung Berlyn and programmed by Rebecca Heineman of Interplay (credited as Bill Heineman) in cooperation with Brainwave Creations. Tass Times was released for the Atari ST, Amiga, Commodore 64, Apple II, Apple IIGS, Macintosh, and IBM PC compatibles. It was the first commercial game for the IIGS.