Half-Life: Alyx storyline - Combine OverWiki, the original Half-Life wiki and Portal wiki

Half-Life: Alyx - Combine OverWiki, the original Half-Life wiki and Portal wiki

Steam Community :: Guide :: The Character Information Guide

How is Portal related to Half-Life? - Quora

The Nihilanth – 5 Mysteries Surrounding Our Ancient Foe – LambdaGeneration

Half-Life 2 Beta - Everything You Need To Know!

Half-Life - Combine OverWiki, the original Half-Life wiki and Portal wiki

Half-Life 2: Episode One storyline, Half-Life Wiki

Advisor Platform, Half-Life Wiki

Half-Life 2 storyline, Half-Life Wiki

Alyx Vance, Half-Life Wiki

Half-Life 2: Episode One storyline - Combine OverWiki, the original Half-Life wiki and Portal wiki

The original route Gordon Freeman was supposed to take in Half Life 2 : r/ HalfLife

Best estimate on exactly when the Black Mesa Incident took place. : r/ HalfLife

Half-Life Know Your Meme