Black Mesa

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This game is currently undergoing beta testing and development - information here may change frequently and could be outdated or irrelevant.
Black Mesa
Black Mesa Cover.jpg
Release dates
Early access
Black Mesa at SteamDB
 Black Mesa at Wikipedia
Half-Life 1998
Half-Life: Opposing Force 1999
Half-Life: Blue Shift 2001
Half-Life: Source 2004
Half-Life 2 2004
Half-Life 2: Deathmatch 2004
Half-Life 2: Lost Coast 2005
Half-Life Deathmatch: Source 2006
Half-Life 2: Episode One 2006
Half-Life 2: Episode Two 2007
Black Mesa TBA

General information

More information Steam Community Discussions


Source DRM Notes Keys
Steam Availability Table Icons - Steam.svg
Advantage The legacy release, or original mod release, remains available for download at the Official Website.
Information An MP3 Album of the Official Soundtrack is also available for free with the option to donate at the Official Website, as well as at Joel Nielsen's Website. Lossless formats are available for purchase from Bandcamp.

Essential improvements[edit]

Enabling the console[edit]

Fix Options menu

  1. Go to Options, select the Keyboard tab and click on Advanced.
  2. Check Enable the developer console and open the console by using ~.

Game data[edit]

Configuration file(s) location[edit]

Steam <path-to-game>/bms/cfg

Save game data location[edit]

Steam <path-to-game>/bms/save
Information Saved games cannot transfer between the mod release and Steam release. Use sv_unlockedchapters 15 in the console to unlock all chapters.[1]

Save game cloud syncing[edit]

System Native Notes
Steam Cloud Native

Video settings[edit]

Graphics option Option Notes
Widescreen resolution Native Force a resolution with -w 1920 -h 1080 parameters.
Multi-monitor Unknown
Field of view (FOV) Native 75°-90° horizontal. Can be adjusted outside the slider's range using fov_desired XX (XX the desired value, max 120) in console.
Windowed Native
Borderless fullscreen windowed Hackable Use -window -noborder parameters.
Anisotropic filtering (AF) Native Up to 16 samples.
Anti-aliasing (AA) Native Up to 8x MSAA. Also up to 16xQ CSAA (older Nvidia GPUs only).[2]
Vertical sync (Vsync) Native
High frame rate Native Frame rate is capped at 300 FPS; use +fps_max XX parameter.

Input settings[edit]

Keyboard and mouse Native Notes
Remapping Native
Mouse acceleration Native Default is off. Can be toggled in mouse options.
Mouse input in menus Native
Mouse Y-axis inversion Native
Controller support Native
Full controller support Impossible Menus cannot be navigated with a controller.
Controller remapping Native
Controller Y-axis inversion Native

Toggle crouch[edit]

Fix Add script to autoexec.cfg[3]

  1. Go to <path-to-game>/bms/cfg/.
  2. Open autoexec.cfg and add this:
    alias t_duck "duck1"
    alias duck1 "+duck; alias t_duck duck2"
    alias duck2 "-duck; alias t_duck duck1"
    bind "ctrl" "t_duck"
    • Replace ctrl with desired crouch key.
  3. Launch the game and bring up the console.
  4. Type in and enter exec autoexec.

Audio settings[edit]

Audio options Native Notes
Separate volume controls Impossible Music volume slider.
Surround sound Native 4.0, 5.1 and 7.1 surround sound.
Subtitles Native
Closed captions Native
Mute on focus lost Native Can be toggled in audio options.


Language UI Audio CC Notes
English Native Native Native


Multiplayer types

Type Native Notes
LAN play Unknown
Online play Native

System requirements[edit]

Minimum Recommended
Operating system (OS) XP, Vista, 7 7
Processor (CPU) 1.7 GHz Processor Pentium 4 processor (3.0GHz or better)
System memory (RAM) 2 GB 4 GB
Hard disk drive (HDD) 13 GB 20 GB
Video card (GPU) NVIDIA GTX 500 series NVIDIA GTX 650 series


  1. Transfer savegame from the Free Black Mesa :: Black Mesa General Discussions
  2. 16x Q CSAA? :: Black Mesa General Discussions
  3. Toggle crouch? :: Black Mesa General Discussions