Metamod is a plugin/DLL manager that sits between the Half-Life Engine and an HL Game mod, allowing the dynamic loading/unloading of mod-like DLL plugins to add functionality to the HL server or game mod. Metamod-r is improved version of metamod.
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Latest commit 0cf2f70 Aug 24, 2018


Metamod-r is based on the original version of Metamod written by Will Day for Half-Life 1 with some improvements from Jussi Kivilinna (Metamod-p). This product contains a large number of performance optimizations and more pure code. The core was written using JIT compiler.

Metamod-r is incompatible with original HLDS. It's necessary to have installed ReHLDS (API 3.1+). There is no guarantee that the product will work in a different environment.

API 3.1+ Download

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Distributed under GitHub license.


  • All actual documentation in en English and ru Russian languages is placed at this link.

Supported games

Build instructions