**Metamod-r** is based on the original version of [Metamod](http://metamod.org/) written by _Will Day_ for Half-Life 1 with some improvements from [Jussi Kivilinna](https://github.com/jkivilin) ([Metamod-p](https://github.com/jkivilin/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](https://github.com/dreamstalker/ReHLDS) (`API 3.1+`). There is no guarantee that the product will work in a different environment.**
|HLDS | [ReHLDS](https://github.com/dreamstalker/ReHLDS) | OS | Download |
* All actual documentation in ![en](https://i.imgur.com/rm67tUZ.png) **English** and ![ru](https://i.imgur.com/ItziiKg.png) **Russian** languages is placed at [this link](https://github.com/theAsmodai/metamod-r/wiki).