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

Windows

Distributed by
Valve Corporation
Country
Worldwide flag Worldwide
Release Date
Dec 20, 2010
Comments
Steam release
Distributed by
GOG Limited
Country
Worldwide flag Worldwide
Release Date
Sep 01, 2016
Comments
GOG.com release


Release dates and company information contributed by Kam1Kaz3NL77 (54921) and Crawly (1417)