diff --git a/sp/src/game/shared/mapbase/mapbase_shared.cpp b/sp/src/game/shared/mapbase/mapbase_shared.cpp
index 05872b4e..e9527f72 100644
--- a/sp/src/game/shared/mapbase/mapbase_shared.cpp
+++ b/sp/src/game/shared/mapbase/mapbase_shared.cpp
@@ -55,11 +55,9 @@ ConVar mapbase_load_soundscripts("mapbase_load_soundscripts", "1", FCVAR_ARCHIVE
 
 ConVar mapbase_load_localization("mapbase_load_localization", "1", FCVAR_ARCHIVE, "Should we load map-specific localized text files? e.g. \"maps/mapname_english.txt\"");
 
-#ifdef CLIENT_DLL
-
-//ConVar mapbase_load_cc("mapbase_load_cc", "1", FCVAR_ARCHIVE, "Should we load map-specific closed captioning? e.g. \"maps/mapname_closecaption_english.txt\" and \"maps/mapname_closecaption_english.dat\"");
-
-#else
+#ifdef GAME_DLL
+// This constant should change with each Mapbase update
+ConVar mapbase_version( "mapbase_version", MAPBASE_VERSION, FCVAR_NONE, "The version of Mapbase currently being used in this mod's server.dll" );
 
 ConVar mapbase_load_sentences("mapbase_load_sentences", "1", FCVAR_ARCHIVE, "Should we load map-specific sentences? e.g. \"maps/mapname_sentences.txt\"");
 
@@ -68,12 +66,6 @@ ConVar mapbase_flush_talker("mapbase_flush_talker", "1", FCVAR_NONE, "Normally,
 
 ConVar mapbase_load_actbusy("mapbase_load_actbusy", "1", FCVAR_ARCHIVE, "Should we load map-specific actbusy files? e.g. \"maps/mapname_actbusy.txt\"");
 
-#endif
-
-#ifdef GAME_DLL
-// This cvar should change with each Mapbase update
-ConVar mapbase_version( "mapbase_version", "7.0", FCVAR_NONE, "The version of Mapbase currently being used in this mod." );
-
 extern void MapbaseGameLog_Init();
 
 extern void ParseCustomActbusyFile(const char *file);
@@ -83,6 +75,12 @@ extern void ReloadResponseSystem();
 
 // Reloads the response system when the map changes to avoid custom talker leaking
 static bool g_bMapContainsCustomTalker;
+#else
+// This constant should change with each Mapbase update
+ConVar mapbase_version_client( "mapbase_version_client", MAPBASE_VERSION, FCVAR_NONE, "The version of Mapbase currently being used in this mod's client.dll" );
+
+//ConVar mapbase_load_cc("mapbase_load_cc", "1", FCVAR_ARCHIVE, "Should we load map-specific closed captioning? e.g. \"maps/mapname_closecaption_english.txt\" and \"maps/mapname_closecaption_english.dat\"");
+
 #endif
 
 // Indicates this is a core Mapbase mod and not a mod using its code.
diff --git a/sp/src/materialsystem/stdshaders/BaseVSShader.cpp b/sp/src/materialsystem/stdshaders/BaseVSShader.cpp
index 49aafc10..98e6d6c2 100644
--- a/sp/src/materialsystem/stdshaders/BaseVSShader.cpp
+++ b/sp/src/materialsystem/stdshaders/BaseVSShader.cpp
@@ -55,6 +55,9 @@ static ConVar mat_fullbright( "mat_fullbright","0", FCVAR_CHEAT );
 ConVar r_flashlightbrightness( "r_flashlightbrightness", "0.25", FCVAR_CHEAT );
 
 #ifdef MAPBASE
+// This constant should change with each Mapbase update
+ConVar mapbase_version_shaders( "mapbase_version_shaders", MAPBASE_VERSION, FCVAR_NONE, "The version of Mapbase currently being used in this mod's game_shader_dx9.dll" );
+
 ConVar mat_specular_disable_on_missing( "mat_specular_disable_on_missing", "1", FCVAR_ARCHIVE, "Disables specular reflections on a material when the envmap cannot be found." );
 #endif
 
diff --git a/sp/src/public/tier0/platform.h b/sp/src/public/tier0/platform.h
index 422a006f..f463847b 100644
--- a/sp/src/public/tier0/platform.h
+++ b/sp/src/public/tier0/platform.h
@@ -1234,6 +1234,14 @@ inline bool Plat_IsInDebugSession( bool bForceRecheck = false ) { return false;
 PLATFORM_INTERFACE bool Is64BitOS();
 
 
+#ifdef MAPBASE
+//-----------------------------------------------------------------------------
+// General Mapbase version constant compiled into projects for versioning purposes
+//-----------------------------------------------------------------------------
+#define MAPBASE_VERSION "7.0"
+#endif
+
+
 //-----------------------------------------------------------------------------
 // XBOX Components valid in PC compilation space
 //-----------------------------------------------------------------------------