What is .CM file extension?
.CM file extension is a known file type. This section of easyfileopener.com tells you everything you need to know about this extension.
Custom mission created for Grand Theft Auto: San Andreas (GTA SA); similar to a CLEO .CS file, but saved as a mission instead of a custom script; used for adding extra missions, or levels, to the game; may be created with Sanny Builder, a GTA mod utility.
In order to use a CM file with GTA SA, it must be stored in the "game\CLEO" folder.
You can see a list of software programs here on easyfileopener.com 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.