Run Half-Life, click 'Custom Game', select 'Ground Zero' from the list, and click on 'Activate' and go 'Done' Then click on 'New Game' and your on your...
You are Gordon Freeman. On your quest to the Lambda lab you find another one of Black Mesa’s nuclear weapon storage facilities. This one is different though; a rogue group of military has stormed the building and plans to detonate the weapon to rid earth of the alien invasion. You, becoming aware of this, must deactivate the nuclear device to save innocent scientists, and to prevent the destruction of Black Mesa’s vast amounts of data, research and information.
This was originally created by Derek 'Hellfire' McBurney (see his readme for contact details).
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