diff --git a/apps/openmw/mwscript/controlextensions.cpp b/apps/openmw/mwscript/controlextensions.cpp
index 363a09b6bd..1a7b452465 100644
--- a/apps/openmw/mwscript/controlextensions.cpp
+++ b/apps/openmw/mwscript/controlextensions.cpp
@@ -11,7 +11,10 @@
 
 #include "../mwworld/player.hpp"
 
+#include "../mwmechanics/npcstats.hpp"
+
 #include "interpretercontext.hpp"
+#include "ref.hpp"
 
 #include <iostream>
 
@@ -54,11 +57,71 @@ namespace MWScript
                 }
         };
 
+        template<class R>
+        class OpClearForceRun : public Interpreter::Opcode0
+        {
+            public:
+
+                virtual void execute (Interpreter::Runtime& runtime)
+                {
+                    MWWorld::Ptr ptr = R()(runtime);
+
+                    MWWorld::Class::get (ptr).getNpcStats (ptr).mForceRun = false;
+                }
+        };
+
+        template<class R>
+        class OpForceRun : public Interpreter::Opcode0
+        {
+            public:
+
+                virtual void execute (Interpreter::Runtime& runtime)
+                {
+                    MWWorld::Ptr ptr = R()(runtime);
+
+                    MWWorld::Class::get (ptr).getNpcStats (ptr).mForceRun = true;
+                }
+        };
+
+        template<class R>
+        class OpClearForceSneak : public Interpreter::Opcode0
+        {
+            public:
+
+                virtual void execute (Interpreter::Runtime& runtime)
+                {
+                    MWWorld::Ptr ptr = R()(runtime);
+
+                    MWWorld::Class::get (ptr).getNpcStats (ptr).mForceSneak = false;
+                }
+        };
+
+        template<class R>
+        class OpForceSneak : public Interpreter::Opcode0
+        {
+            public:
+
+                virtual void execute (Interpreter::Runtime& runtime)
+                {
+                    MWWorld::Ptr ptr = R()(runtime);
+
+                    MWWorld::Class::get (ptr).getNpcStats (ptr).mForceSneak = true;
+                }
+        };
+
         const int numberOfControls = 7;
 
         const int opcodeEnable = 0x200007e;
         const int opcodeDisable = 0x2000085;
         const int opcodeToggleCollision = 0x2000130;
+        const int opcodeClearForceRun = 0x2000154;
+        const int opcodeClearForceRunExplicit = 0x2000155;
+        const int opcodeForceRun = 0x2000156;
+        const int opcodeForceRunExplicit = 0x2000157;
+        const int opcodeClearForceSneak = 0x2000158;
+        const int opcodeClearForceSneakExplicit = 0x2000159;
+        const int opcodeForceSneak = 0x200015a;
+        const int opcodeForceSneakExplicit = 0x200015b;
 
         const char *controls[numberOfControls] =
         {
@@ -79,6 +142,16 @@ namespace MWScript
 
             extensions.registerInstruction ("togglecollision", "", opcodeToggleCollision);
             extensions.registerInstruction ("tcl", "", opcodeToggleCollision);
+
+            extensions.registerInstruction ("clearforcerun", "", opcodeClearForceRun,
+                opcodeClearForceRunExplicit);
+            extensions.registerInstruction ("forcerun", "", opcodeForceRun,
+                opcodeForceRunExplicit);
+
+            extensions.registerInstruction ("clearforcesneak", "", opcodeClearForceSneak,
+                opcodeClearForceSneakExplicit);
+            extensions.registerInstruction ("forcesneak", "", opcodeForceSneak,
+                opcodeForceSneakExplicit);
         }
 
         void installOpcodes (Interpreter::Interpreter& interpreter)
@@ -90,6 +163,20 @@ namespace MWScript
             }
 
             interpreter.installSegment5 (opcodeToggleCollision, new OpToggleCollision);
+
+            interpreter.installSegment5 (opcodeClearForceRun, new OpClearForceRun<ImplicitRef>);
+            interpreter.installSegment5 (opcodeForceRun, new OpForceRun<ImplicitRef>);
+            interpreter.installSegment5 (opcodeClearForceSneak, new OpClearForceSneak<ImplicitRef>);
+            interpreter.installSegment5 (opcodeForceSneak, new OpForceSneak<ImplicitRef>);
+
+            interpreter.installSegment5 (opcodeClearForceRunExplicit,
+                new OpClearForceRun<ExplicitRef>);
+            interpreter.installSegment5 (opcodeForceRunExplicit,
+                new OpForceRun<ExplicitRef>);
+            interpreter.installSegment5 (opcodeClearForceSneakExplicit,
+                new OpClearForceSneak<ExplicitRef>);
+            interpreter.installSegment5 (opcodeForceSneakExplicit,
+                new OpForceSneak<ExplicitRef>);
         }
     }
 }
diff --git a/apps/openmw/mwscript/docs/vmformat.txt b/apps/openmw/mwscript/docs/vmformat.txt
index 4423f17cfb..eb13a87224 100644
--- a/apps/openmw/mwscript/docs/vmformat.txt
+++ b/apps/openmw/mwscript/docs/vmformat.txt
@@ -147,4 +147,12 @@ op 0x2000150: ForceGreeting, explicit reference
 op 0x2000151: ToggleFullHelp
 op 0x2000152: Goodbye
 op 0x2000153: DontSaveObject (left unimplemented)
-opcodes 0x2000154-0x3ffffff unused
+op 0x2000154: ClearForceRun
+op 0x2000155: ClearForceRun, explicit reference
+op 0x2000156: ForceRun
+op 0x2000156: ForceRun, explicit reference
+op 0x2000157: ClearForceSneak
+op 0x2000158: ClearForceSneak, explicit reference
+op 0x2000159: ForceSneak
+op 0x200015a: ForceSneak, explicit reference
+opcodes 0x200015b-0x3ffffff unused