Valve Map Format

File Format
Name	Valve Map Format
Ontology	Electronic File Formats Game data files Valve Map Format
Extension(s)	.vmf
Released	2004

Valve Map Format is the format used for maps made in the Hammer Editor. The file is all plain text, and describes the level, geometry, entities, and other details. Hammer can compile the map into a BSP.

Format

https://developer.valvesoftware.com/wiki/Valve_Map_Format

External links

How to decompile maps