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This mod for Source has been released! Download it now.


<Half-Life 2> Half-Life 2: Substance modifies Half-Life 2's single player game with enemies in new locations and more difficult settings, etc. Features additional areas, bullet time, multiple character classes with different attributes, (most of which are from the video game series Metal Gear Solid), melee attacks and additional weapons, and a variety of other effects and features.

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