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It was confirmed in April 2006 that Half-Life 2: Episode Four was in production, and that it would mark the start of a new story arc. Furthermore, it was confirmed that Episode Four was under development by a third-party studio under Valve Corporation's supervision.
Source:
Half-Life 2 - Wikipedia, the free encyclopedia
It was confirmed in April 2006 that Half-Life 2: Episode Four was in production, and that it would mark the start of a new story arc. Furthermore, it was confirmed that Episode Four was under development by a third-party studio under Valve Corporation's supervision.
Source:
Half-Life 2 - Wikipedia, the free encyclopedia