What is .AMXX file extension?
Plug-in created for AMX Mod X, a metamod plugin for Half-Life and other similar games; designed for server administration; used for adding custom features to the game, such as statistics tracking and gameplay modifications.
Half-Life versions supported by AMX Mod X include Counter-Strike, Day of Defeat, Natural Selection, Team Fortress Classic, The Specialists, and Earth's Special Forces.
AMX Mod, the predecessor to AMX Mod X, saves plugins with the .AMX file extension.
You can see a list of software programs here on easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.