Half-Life 2: Episode One

Picking up after the events of Half-Life 2, scientist Gordon Freeman and Alyx Vance attempt to slow an unavoidable chain reaction that will destroy City 17.

Half-Life 2: Episode One Bugs - Valve Developer Community

Half-Life 2: Episode One arrives exclusively on Nvidia Shield Tablet

Sebastian file - Mod DB

Half Life 2, Episode 1 and Episode 2 Fan Casting on myCast

Half-Life 2 VR Mod Episode One is a VR Adaption of Half-Life 2: Episode One for Any SteamVR Supported Headset

Half-Life 2: Episode 1 - Full Walkthrough

Half-Life 2: Episode One - SteamGridDB

Finally earned 100% completion on Half-Life 2, Episode One and Episode Two and I couldn't be more proud with myself. : r/HalfLifeLounge

Half Life 2: Episode 1: Last boss and ending