The blackmesa.md5 file you have requested: Modifications / Black Mesa / Clients / Half-Life 2 Mod - Black Mesa (3 of 3) - 0.1kb is not available. Perhaps try browsing all files for the game Half-Life 2 and upload any files you want to share or are missing. This is the only information we could locate:
Black Mesa is a complete re-creation of the game Half-Life, utilizing the Source engine. Black Mesa will let you re-visit the world that started the Half-Life continuum. Black Mesa is finally here! Be sure to download all three parts, run the installer and enjoy!