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This is a list of the locations featured in the Half-Life and Portal universe, listed by game, and in chronological order.
Half-Life and its expansions[]
Half-Life[]
Main Locations: Black Mesa Research Facility, Xen
Half-Life: Opposing Force[]
Main Locations: Santego Military Base, Black Mesa Research Facility, Xen (Note: In all chapters after We Are Not Alone, Xen can be accessed using the Displacer Cannon's secondary fire.)
| Chapter | Location |
|---|---|
| Boot Camp | Santego Military Base |
| Incoming | Inside of a V-22 Osprey above the Black Mesa desert |
| Welcome to Black Mesa | Black Mesa Medical Lab |
| Black Mesa Transit System | |
| "We Are Pulling Out" | Black Mesa Transit System |
| Missing in Action | ? |
| Friendly Fire | Sector E Materials Transport |
| Sector F Lambda Complex | |
| We Are Not Alone | Sector F Lambda Complex |
| Xen | |
| Sector A Training Facility (Displacer Cannon) | |
| Crush Depth | Sector E Biodome Complex
Xen (Displacer Cannon) |
| Vicarious Reality | |
| Pit Worm's Nest | Waste Processing Area 3 |
| Xen (Displacer Cannon) | |
| Foxtrot Uniform | Sector G Hydro Electric |
| Xen (Displacer Cannon) | |
| "The Package" | Sector E Materials Transport
Xen (Displacer Cannon) |
| Worlds Collide | |
| Conclusion | Various Locations, inside of a V-22 Osprey |
Half-Life: Blue Shift[]
Main Locations: Black Mesa Research Facility, Xen
Half-Life: Decay[]
Half-Life 2 and its episodes[]
Half-Life 2[]
Main Locations: City 17 and The Wasteland
Half-Life 2: Lost Coast[]
Half-Life 2: Episode One[]
Main Location: City 17
| Chapter | Location |
|---|---|
| Undue Alarm | Citadel |
| Direct Intervention | Citadel Core |
| Lowlife | City 17 Underground |
| Urban Flight | Hospital |
| Exit 17 | Technical Trainstation |
Half-Life 2: Episode Two[]
Main Location: The Outlands
| Chapter | Location |
|---|---|
| To the White Forest | Victory Mine |
| This Vortal Coil | |
| Freeman Pontifex | |
| Riding Shotgun | The Outlands |
| Under the Radar | White Forest Inn |
| Our Mutual Fiend | White Forest |
| T-Minus One |
Portal series[]
Portal[]
Portal 2[]
Main location: Aperture Science Enrichment Center
