Natural Selection is a multiplayer-only Half-Life mod where one team plays marines and the other plays aliens. The humans must keep their cool and work together to assault an alien-infested spacecraft or colony. Marines vs. marines and aliens vs. aliens...

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This is beta 4 of the Natural Selection v3.0 mod for Half-Life. Changes in this version include updated maps, bug fixes, reduced lag, and several minor gameplay tweaks.Requirements:Windows 98/Me/2000/XP, Half-Life retail...

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