With the Z-machine, Infocom was able to release most of their games for most popular home computers of the day simultaneously—the Apple II family, Atari 800, IBM PC compatibles, Amstrad CPC/PCW (one disc worked on both machines), Commodore 64, Commodore Plus/4, Commodore 128, Kaypro CP/M, Texas Instruments TI-99/4A, the Mac, Atari ST, the Commodore Amiga, and the Radio Shack TRS-80 and TRS-80 Color Computer. The company was also known for shipping creative props, or "feelies" (and even "smellies"), with its games.