Following the destruction of the Citadel, the Combine are attempting to open a massive "super portal" to summon reinforcements. Half-Life 2 on Steam
is the second installment in Valve's episodic series, continuing the journey of Gordon Freeman and Alyx Vance after their escape from City 17. Released in October 2007 as part of The Orange Box , it is widely praised for its improved pacing and expansive outdoor environments compared to its predecessor. Plot & Storyline
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