diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 9be3c5387..48a0a99f0 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -624,6 +624,7 @@ file( GLOB HEADER_FILES
 	common/scripting/vm/*h
 	common/scripting/jit/*h
 	common/scripting/interface/*.h
+	common/scripting/backend/*.h
 	utility/*.h
 	scripting/*.h
 	scripting/backend/*.h
@@ -1043,9 +1044,7 @@ set (PCH_SOURCES
 	scripting/thingdef.cpp
 	scripting/thingdef_data.cpp
 	scripting/thingdef_properties.cpp
-	scripting/backend/codegen.cpp
 	scripting/backend/codegen_doom.cpp
-	scripting/backend/vmbuilder.cpp
 	scripting/decorate/olddecorations.cpp
 	scripting/decorate/thingdef_exp.cpp
 	scripting/decorate/thingdef_parse.cpp
@@ -1147,6 +1146,7 @@ set (PCH_SOURCES
 	common/engine/renderstyle.cpp
 	common/engine/v_colortables.cpp
 	common/engine/serializer.cpp
+	common/engine/m_random.cpp
 	common/objects/dobject.cpp
 	common/objects/dobjgc.cpp
 	common/objects/dobjtype.cpp
@@ -1159,8 +1159,9 @@ set (PCH_SOURCES
 	common/scripting/vm/vmexec.cpp
 	common/scripting/vm/vmframe.cpp
 	common/scripting/interface/stringformat.cpp
+	common/scripting/backend/vmbuilder.cpp
+	common/scripting/backend/codegen.cpp
 	
-	utility/m_random.cpp
 	utility/nodebuilder/nodebuild.cpp
 	utility/nodebuilder/nodebuild_classify_nosse2.cpp
 	utility/nodebuilder/nodebuild_events.cpp
@@ -1252,6 +1253,8 @@ include_directories( .
 	common/scripting/vm
 	common/scripting/jit
 	common/scripting/core
+	common/scripting/interface
+	common/scripting/backend
 	g_statusbar
 	console
 	playsim
diff --git a/src/utility/m_random.cpp b/src/common/engine/m_random.cpp
similarity index 93%
rename from src/utility/m_random.cpp
rename to src/common/engine/m_random.cpp
index 41fc4e50c..3af14526b 100644
--- a/src/utility/m_random.cpp
+++ b/src/common/engine/m_random.cpp
@@ -59,7 +59,6 @@
 
 #include <assert.h>
 
-#include "doomstat.h"
 #include "m_random.h"
 #include "serializer.h"
 #include "m_crc32.h"
@@ -80,11 +79,7 @@
 
 // EXTERNAL DATA DECLARATIONS ----------------------------------------------
 
-extern FRandom pr_spawnmobj;
-extern FRandom pr_acs;
-extern FRandom pr_chase;
-extern FRandom pr_exrandom;
-extern FRandom pr_damagemobj;
+FRandom pr_exrandom("EX_Random");
 
 // PUBLIC DATA DEFINITIONS -------------------------------------------------
 
@@ -260,25 +255,6 @@ void FRandom::Init(uint32_t seed)
 	SFMTObj::Init(NameCRC, seed);
 }
 
-//==========================================================================
-//
-// FRandom :: StaticSumSeeds
-//
-// This function produces a uint32_t that can be used to check the consistancy
-// of network games between different machines. Only a select few RNGs are
-// used for the sum, because not all RNGs are important to network sync.
-//
-//==========================================================================
-
-uint32_t FRandom::StaticSumSeeds ()
-{
-	return
-		pr_spawnmobj.sfmt.u[0] + pr_spawnmobj.idx +
-		pr_acs.sfmt.u[0] + pr_acs.idx +
-		pr_chase.sfmt.u[0] + pr_chase.idx +
-		pr_damagemobj.sfmt.u[0] + pr_damagemobj.idx;
-}
-
 //==========================================================================
 //
 // FRandom :: StaticWriteRNGState
diff --git a/src/utility/m_random.h b/src/common/engine/m_random.h
similarity index 98%
rename from src/utility/m_random.h
rename to src/common/engine/m_random.h
index 24742efed..d9eec6c44 100644
--- a/src/utility/m_random.h
+++ b/src/common/engine/m_random.h
@@ -48,6 +48,11 @@ public:
 	FRandom (const char *name);
 	~FRandom ();
 
+	int Seed() const
+	{
+		return sfmt.u[0] + idx;
+	}
+
 	// Returns a random number in the range [0,255]
 	int operator()()
 	{
@@ -163,7 +168,6 @@ public:
 
 	// Static interface
 	static void StaticClearRandom ();
-	static uint32_t StaticSumSeeds ();
 	static void StaticReadRNGState (FSerializer &arc);
 	static void StaticWriteRNGState (FSerializer &file);
 	static FRandom *StaticFindRNG(const char *name);
diff --git a/src/scripting/backend/codegen.cpp b/src/common/scripting/backend/codegen.cpp
similarity index 100%
rename from src/scripting/backend/codegen.cpp
rename to src/common/scripting/backend/codegen.cpp
diff --git a/src/scripting/backend/codegen.h b/src/common/scripting/backend/codegen.h
similarity index 100%
rename from src/scripting/backend/codegen.h
rename to src/common/scripting/backend/codegen.h
diff --git a/src/scripting/backend/vmbuilder.cpp b/src/common/scripting/backend/vmbuilder.cpp
similarity index 100%
rename from src/scripting/backend/vmbuilder.cpp
rename to src/common/scripting/backend/vmbuilder.cpp
diff --git a/src/scripting/backend/vmbuilder.h b/src/common/scripting/backend/vmbuilder.h
similarity index 100%
rename from src/scripting/backend/vmbuilder.h
rename to src/common/scripting/backend/vmbuilder.h
diff --git a/src/g_game.cpp b/src/g_game.cpp
index cf8ea599c..0c9baf9ea 100644
--- a/src/g_game.cpp
+++ b/src/g_game.cpp
@@ -1047,7 +1047,29 @@ bool G_Responder (event_t *ev)
 			ev->type == EV_Mouse);
 }
 
+//==========================================================================
+//
+// FRandom :: StaticSumSeeds
+//
+// This function produces a uint32_t that can be used to check the consistancy
+// of network games between different machines. Only a select few RNGs are
+// used for the sum, because not all RNGs are important to network sync.
+//
+//==========================================================================
 
+extern FRandom pr_spawnmobj;
+extern FRandom pr_acs;
+extern FRandom pr_chase;
+extern FRandom pr_damagemobj;
+
+static uint32_t StaticSumSeeds()
+{
+	return
+		pr_spawnmobj.Seed() +
+		pr_acs.Seed() +
+		pr_chase.Seed() +
+		pr_damagemobj.Seed();
+}
 
 //
 // G_Ticker
@@ -1166,7 +1188,7 @@ void G_Ticker ()
 
 	// [RH] Include some random seeds and player stuff in the consistancy
 	// check, not just the player's x position like BOOM.
-	uint32_t rngsum = FRandom::StaticSumSeeds ();
+	uint32_t rngsum = StaticSumSeeds ();
 
 	//Added by MC: For some of that bot stuff. The main bot function.
 	primaryLevel->BotInfo.Main (primaryLevel);
diff --git a/src/gamedata/d_dehacked.cpp b/src/gamedata/d_dehacked.cpp
index e76509508..42995c0ae 100644
--- a/src/gamedata/d_dehacked.cpp
+++ b/src/gamedata/d_dehacked.cpp
@@ -62,7 +62,7 @@
 #include "serializer.h"
 #include "thingdef.h"
 #include "v_text.h"
-#include "backend/vmbuilder.h"
+#include "vmbuilder.h"
 #include "types.h"
 #include "m_argv.h"
 #include "actorptrselect.h"
diff --git a/src/scripting/decorate/olddecorations.cpp b/src/scripting/decorate/olddecorations.cpp
index f0749048c..15722cd6f 100644
--- a/src/scripting/decorate/olddecorations.cpp
+++ b/src/scripting/decorate/olddecorations.cpp
@@ -41,7 +41,7 @@
 #include "p_lnspec.h"
 #include "decallib.h"
 #include "thingdef.h"
-#include "backend/codegen.h"
+#include "codegen.h"
 
 // TYPES -------------------------------------------------------------------
 
diff --git a/src/scripting/decorate/thingdef_exp.cpp b/src/scripting/decorate/thingdef_exp.cpp
index 141b73d47..40e106baa 100644
--- a/src/scripting/decorate/thingdef_exp.cpp
+++ b/src/scripting/decorate/thingdef_exp.cpp
@@ -42,10 +42,10 @@
 #include "cmdlib.h"
 #include "a_pickups.h"
 #include "thingdef.h"
-#include "backend/codegen.h"
+#include "codegen.h"
 #include "backend/codegen_doom.h"
 
-FRandom pr_exrandom ("EX_Random");
+extern FRandom pr_exrandom;
 
 static FxExpression *ParseRandom(FScanner &sc, FName identifier, PClassActor *cls);
 static FxExpression *ParseRandomPick(FScanner &sc, FName identifier, PClassActor *cls);
diff --git a/src/scripting/decorate/thingdef_parse.cpp b/src/scripting/decorate/thingdef_parse.cpp
index 3dcba999c..6526a2130 100644
--- a/src/scripting/decorate/thingdef_parse.cpp
+++ b/src/scripting/decorate/thingdef_parse.cpp
@@ -43,7 +43,7 @@
 #include "a_pickups.h"
 #include "thingdef.h"
 #include "a_morph.h"
-#include "backend/codegen.h"
+#include "codegen.h"
 #include "backend/codegen_doom.h"
 #include "filesystem.h"
 #include "v_text.h"
diff --git a/src/scripting/decorate/thingdef_states.cpp b/src/scripting/decorate/thingdef_states.cpp
index ff7c9c3e4..e9481eee0 100644
--- a/src/scripting/decorate/thingdef_states.cpp
+++ b/src/scripting/decorate/thingdef_states.cpp
@@ -43,7 +43,7 @@
 #include "p_lnspec.h"
 #include "p_local.h"
 #include "thingdef.h"
-#include "backend/codegen.h"
+#include "codegen.h"
 #include "backend/codegen_doom.h"
 #ifndef _MSC_VER
 #include "i_system.h"  // for strlwr()
diff --git a/src/scripting/thingdef.cpp b/src/scripting/thingdef.cpp
index 8772f1eb4..0a5089ddf 100644
--- a/src/scripting/thingdef.cpp
+++ b/src/scripting/thingdef.cpp
@@ -49,7 +49,7 @@
 #include "a_weapons.h"
 #include "p_conversation.h"
 #include "v_text.h"
-#include "backend/codegen.h"
+#include "codegen.h"
 #include "stats.h"
 #include "info.h"
 #include "thingdef.h"
diff --git a/src/scripting/thingdef_properties.cpp b/src/scripting/thingdef_properties.cpp
index 6add94538..633e43bdb 100644
--- a/src/scripting/thingdef_properties.cpp
+++ b/src/scripting/thingdef_properties.cpp
@@ -50,7 +50,7 @@
 #include "thingdef.h"
 #include "a_morph.h"
 #include "teaminfo.h"
-#include "backend/vmbuilder.h"
+#include "vmbuilder.h"
 #include "a_keys.h"
 #include "g_levellocals.h"
 #include "types.h"
diff --git a/src/scripting/zscript/zcc_compile.h b/src/scripting/zscript/zcc_compile.h
index 040d28bd3..2235b7796 100644
--- a/src/scripting/zscript/zcc_compile.h
+++ b/src/scripting/zscript/zcc_compile.h
@@ -2,7 +2,7 @@
 #define ZCC_COMPILE_H
 
 #include <memory>
-#include "backend/codegen.h"
+#include "codegen.h"
 
 struct Baggage;
 struct FPropertyInfo;