A campaign set in intricate Black Mesa facility, can you fight your way through the maze-like hallways and escape the zombie ridden facility? All credit goes to Crowbar Collective for materials, models, sounds and everything else included that isn't base L...

A campaign set in intricate Black Mesa facility, can you fight your way through the maze-like hallways and escape the zombie ridden facility? All credit goes to Crowbar Collective for materials, models, sounds and everything else included that isn't base L...

A campaign set in intricate Black Mesa facility, can you fight your way through the maze-like hallways and escape the zombie ridden facility? All credit goes to Crowbar Collective for materials, models, sounds and everything else included that isn't base L...

A campaign set in intricate Black Mesa facility, can you fight your way through the maze-like hallways and escape the zombie ridden facility? All credit goes to Crowbar Collective for materials, models, sounds and everything else included that isn't base L...

A campaign set in intricate Black Mesa facility, can you fight your way through the maze-like hallways and escape the zombie ridden facility? All credit goes to Crowbar Collective for materials, models, sounds and everything else included that isn't base L...

This is a CONTENT ADDON, not the campaign itself. This addon only features extra content that was previously missing from the campaign. Report Bugs on the (1/5) content mod. That's where all discussions should go. All credit goes to Crowbar Collective for ...