The bgupdate05b.exe file you have requested: Modifications / Other Mods / The Battle Grounds 0.5B patch - 494.24kb is not available. Perhaps try browsing all files for the game Half-Life and upload any files you want to share or are missing. This is the only information we could locate:

This is a patch to upgrade The Battle Grounds beta 0.5 to 0.5BThis patch fixes mainly lag issues, along with a few added features.

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