diff --git a/AMBuildScript b/AMBuildScript
index 74f49b6..2b09e43 100644
--- a/AMBuildScript
+++ b/AMBuildScript
@@ -13,16 +13,18 @@ class MMS:
 		                         'name': 'EPISODEONE',     'platform': ['windows', 'linux']}
 		self.sdkInfo['ep2'] =   {'sdk': 'HL2SDKOB',        'ext': '2.ep2',   'def': '3',
 		                         'name': 'ORANGEBOX',      'platform': ['windows', 'linux']}
-		self.sdkInfo['ep2v'] =  {'sdk': 'HL2SDKOBVALVE',   'ext': '2.ep2v',  'def': '4',
+		self.sdkInfo['ep2v'] =  {'sdk': 'HL2SDKOBVALVE',   'ext': '2.ep2v',  'def': '5',
 		                         'name': 'ORANGEBOXVALVE', 'platform': ['windows', 'linux', 'darwin']}
-		self.sdkInfo['l4d'] =   {'sdk': 'HL2SDKL4D',       'ext': '2.l4d',   'def': '5',
+		self.sdkInfo['l4d'] =   {'sdk': 'HL2SDKL4D',       'ext': '2.l4d',   'def': '6',
 		                         'name': 'LEFT4DEAD',      'platform': ['windows', 'linux', 'darwin']}
-		self.sdkInfo['l4d2'] =  {'sdk': 'HL2SDKL4D2',      'ext': '2.l4d2',  'def': '6',
+		self.sdkInfo['l4d2'] =  {'sdk': 'HL2SDKL4D2',      'ext': '2.l4d2',  'def': '7',
 		                         'name': 'LEFT4DEAD2',     'platform': ['windows', 'linux', 'darwin']}
 		self.sdkInfo['darkm'] = {'sdk': 'HL2SDK-DARKM',    'ext': '2.darkm', 'def': '2',
 		                         'name': 'DARKMESSIAH',    'platform': ['windows']}
-		self.sdkInfo['swarm'] = {'sdk': 'HL2SDK-SWARM',    'ext': '2.swarm', 'def': '7',
+		self.sdkInfo['swarm'] = {'sdk': 'HL2SDK-SWARM',    'ext': '2.swarm', 'def': '8',
 		                         'name': 'ALIENSWARM',     'platform': ['windows']}
+		self.sdkInfo['bgt'] =   {'sdk': 'HL2SDK-BGT',      'ext': '2.bgt', 'def': '4',
+		                         'name': 'BLOODYGOODTIME', 'platform': ['windows']}
 
 		if AMBuild.mode == 'config':
 			#Detect compilers
@@ -42,6 +44,7 @@ class MMS:
 			if AMBuild.target['platform'] == 'windows':
 				envvars['HL2SDK-DARKM'] = 'hl2sdk-darkm'
 				envvars['HL2SDK-SWARM'] = 'hl2sdk-swarm'
+				envvars['HL2SDK-BGT']   = 'hl2sdk-bgt'
 
 			#Must have a path for each envvar (file a bug if you don't like this)
 			for i in envvars:
diff --git a/core/ISmmPluginExt.h b/core/ISmmPluginExt.h
index 13dbcb5..bcf8abc 100644
--- a/core/ISmmPluginExt.h
+++ b/core/ISmmPluginExt.h
@@ -44,6 +44,7 @@
 #define SOURCE_ENGINE_ORANGEBOXVALVE	6				/**< Orange Box Source Engine for Valve games (TF2/DOD:S) */
 #define SOURCE_ENGINE_LEFT4DEAD2		7				/**< Left 4 Dead 2 */
 #define SOURCE_ENGINE_ALIENSWARM		8				/**< Alien Swarm */
+#define SOURCE_ENGINE_BLOODYGOODTIME	9				/**< Bloody Good Time */
 
 #define METAMOD_PLAPI_VERSION			15				/**< Version of this header file */
 #define METAMOD_PLAPI_NAME				"ISmmPlugin"	/**< Name of the plugin interface */
diff --git a/core/metamod_console.cpp b/core/metamod_console.cpp
index 56bc21e..84b0066 100644
--- a/core/metamod_console.cpp
+++ b/core/metamod_console.cpp
@@ -111,7 +111,9 @@ bool Command_Meta(IMetamodSourceCommandInfo *info)
 			}
 #endif
 
-#if SOURCE_ENGINE == SE_ALIENSWARM
+#if SOURCE_ENGINE == SE_BLOODYGOODTIME
+			CONMSG("  Engine: Bloody Good Time (2010)\n");
+#elif SOURCE_ENGINE == SE_ALIENSWARM
 			CONMSG("  Engine: Alien Swarm (2010)\n");
 #elif SOURCE_ENGINE == SE_LEFT4DEAD2
 			CONMSG("  Engine: Left 4 Dead 2 (2009)\n");
diff --git a/core/provider/provider_ep2.cpp b/core/provider/provider_ep2.cpp
index af2a95e..688a310 100644
--- a/core/provider/provider_ep2.cpp
+++ b/core/provider/provider_ep2.cpp
@@ -358,7 +358,9 @@ const char *BaseProvider::GetGameDescription()
 
 int BaseProvider::DetermineSourceEngine(const char *game)
 {
-#if SOURCE_ENGINE == SE_ALIENSWARM
+#if SOURCE_ENGINE == SE_BLOODYGOODTIME
+	return SOURCE_ENGINE_BLOODYGOODTIME;
+#elif SOURCE_ENGINE == SE_ALIENSWARM
 	return SOURCE_ENGINE_ALIENSWARM;
 #elif SOURCE_ENGINE == SE_LEFT4DEAD2
 	return SOURCE_ENGINE_LEFT4DEAD2;
diff --git a/loader/loader.cpp b/loader/loader.cpp
index 0912ec7..48b4c71 100644
--- a/loader/loader.cpp
+++ b/loader/loader.cpp
@@ -73,6 +73,7 @@ static const char *backend_names[] =
 	"1.ep1",
 	"2.darkm",
 	"2.ep2",
+	"2.bgt",
 	"2.ep2v",
 	"2.l4d",
 	"2.l4d2",
@@ -285,7 +286,15 @@ mm_DetermineBackend(QueryValveInterface engineFactory, const char *game_name)
 		{
 			if (engineFactory("VModelInfoServer002", NULL) != NULL)
 			{
-				return MMBackend_Episode2;
+				/* BGT has same iface version numbers and libs as ep2 */
+				if (strcmp(game_name, "pm") == 0)
+				{
+					return MMBackend_BloodyGoodTime;
+				}
+				else
+				{
+					return MMBackend_Episode2;
+				}
 			}
 			else if (engineFactory("VModelInfoServer003", NULL) != NULL)
 			{
diff --git a/loader/loader.h b/loader/loader.h
index a6543fa..ef93fde 100644
--- a/loader/loader.h
+++ b/loader/loader.h
@@ -83,6 +83,7 @@ enum MetamodBackend
 	MMBackend_Episode1 = 0,
 	MMBackend_DarkMessiah,
 	MMBackend_Episode2,
+	MMBackend_BloodyGoodTime,
 	MMBackend_Episode2Valve,
 	MMBackend_Left4Dead,
 	MMBackend_Left4Dead2,