Release dates, publisher and developer information for this game listed by platform:

DOS

Country
United States flag United States
Release Date
1991
Country
Worldwide flag Worldwide
Release Date
Mar 20, 2009
Comments
Freeware release

Macintosh

Distributed by
Valve Corporation
Country
Worldwide flag Worldwide
Release Date
May 06, 2015
Comments
Steam re-release

Windows

Distributed by
Valve Corporation
Country
Worldwide flag Worldwide
Release Date
May 06, 2015
Comments
Steam re-release


Release dates and company information contributed by Picard (40774), ZeTomes (36399) and Retron (225)