The BMS.zip file you have requested: Modifications / Black Mesa / Mods / Xen Mod / Black Mesa Source Mod - Xen Part 1 - 25.56mb 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:

Xen for black mesa source. This is my version of Xen for Black Mesa source. This is the first part.

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