2 file types use the .csm file extension.

• 1.Steam Game Backup File
• 2.Character Studio Marker File

File Type 1Steam Game Backup File

Developer	Valve
Popularity
Category	Backup Files
Format	N/A

What is a CSM file?

Backup file used by Steam, a digital distribution service used to access games and software; contains the backup data of a game played with Steam; similar to a .CSD and .SIS file.

To restore a CSM backup file, select Steam → Backup and Restore Games... and choose the file. The CSM file is located with other CSD and SIS backup files in the appropriate game folder in the 'Steam Backups' folder.

Open any file on your Mac with File Viewer.

File Type 2Character Studio Marker File

Developer	Autodesk
Popularity
Category	3D Image Files
Format	N/A

.CSM File Association 2

ASCII text file that contains position markers for a 3D character; used by Character Studio, a biped animation tool included with Autodesk's 3ds Max program; saves the position of the biped in the software's motion capture buffer.

Limb rotation data is not stored in CSM files, but is saved related .BVH files.

Windows

Autodesk 3ds Max 2018