Users who own this game also own:

Half-Life
Half-Life
Counter-Strike
Counter-Strike
Half-Life 2
Half-Life 2
Portal
Portal
Half-Life 2: Episode One
Half-Life 2: Episode One

Users who love this game also love:

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Warcraft III: Reign of Chaos
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Warcraft III: The Frozen Throne
The Legend of Zelda: A Link to the Past
The Legend of Zelda: A Link to the Past