Ozmoo

Ozmoo is an open-source Z-machine interpreter that enables 8-bit retro computers, such as the Commodore 64, C128, Plus/4, MEGA65, and Commander X16, to run classic and modern text adventure games. Built to maximize hardware performance and screen real estate, it gives interactive fiction creators a legal, redistributable engine to package and play game  from classic Infocom releases to new PunyInform titles.

Download it from https://github.com/johanberntsson/ozmoo