AMXX File

What are AMXX files and how to open them

Are you having problems opening an AMXX file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your AMXX files.

What is an AMXX file?

An .AMXX file is an AMX Mod X Plugin file.

AMX Mod X Plugin files store compiled scripts used by the AMX Mod X system, a mod for the Half-Life engine that lets server administrators add custom behavior to game servers. These files extend game functionality by registering new commands, handling events, modifying gameplay elements, or integrating with external services such as databases.

They are produced by compiling plain script files written in Pawn language (source files ending in .sma). The AMX Mod X compiler (amxxsc or amxxpc) translates those sources into plugin files that AMX Mod X loads at runtime on the server. Players joining the server do not need the script source - only the compiled plugin.

Files begin with the ASCII header XXMA at the very start (offset 0) identifying them as AMX Mod X Plugin format.

How to open AMXX files

Important: Different programs may use files with the AMXX file extension for different purposes, so unless you are sure which format your AMXX file is, you may need to try a few different programs.

We have not yet verified any programs for Windows that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!

Last updated: August 18, 2026

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