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

Macintosh

Country
Worldwide flag Worldwide
Release Date
Sep 01, 2011
Comments
Mac App Store release
Distributed by
Valve Corporation
Country
Worldwide flag Worldwide
Release Date
Feb 13, 2012
Comments
Steam release


Release dates and company information contributed by Foxhack (12605) and Kabushi (165413)