<function name="GetMapVersion" parent="game" type="libraryfunc"> <description>Returns the revision (Not to be confused with [VBSP Version](https://developer.valvesoftware.com/wiki/Source_BSP_File_Format#Versions)) of the current map. <description>Returns the revision (Not to be confused with [VBSP Version](https://developer.valvesoftware.com/wiki/Source_BSP_File_Format#Versions)) and BSP version of the current map. Map revision is the amount of times the map file was saved in Hammer at the time of the map being compiled. This is useful to detect when a map has changed. </description> <realm>Server</realm> <rets> <ret name="" type="number">Revision of the currently loaded map. </ret> <ret name="" type="number" added="2026.02.06">BSP version. </ret> </rets> </function>