diff --git a/apps/openmw/mwscript/interpretercontext.cpp b/apps/openmw/mwscript/interpretercontext.cpp
index f9d85375b..62febb33d 100644
--- a/apps/openmw/mwscript/interpretercontext.cpp
+++ b/apps/openmw/mwscript/interpretercontext.cpp
@@ -192,11 +192,6 @@ namespace MWScript
     {
     }
 
-    bool InterpreterContext::menuMode()
-    {
-        return MWBase::Environment::get().getWindowManager()->isGuiMode();
-    }
-
     int InterpreterContext::getGlobalShort (const std::string& name) const
     {
         return MWBase::Environment::get().getWorld()->getGlobalInt (name);
@@ -425,11 +420,6 @@ namespace MWScript
         }
     }
 
-    float InterpreterContext::getSecondsPassed() const
-    {
-        return MWBase::Environment::get().getFrameDuration();
-    }
-
     int InterpreterContext::getMemberShort (const std::string& id, const std::string& name,
         bool global) const
     {
diff --git a/apps/openmw/mwscript/interpretercontext.hpp b/apps/openmw/mwscript/interpretercontext.hpp
index 7e9f09cdb..e7c2790ce 100644
--- a/apps/openmw/mwscript/interpretercontext.hpp
+++ b/apps/openmw/mwscript/interpretercontext.hpp
@@ -77,8 +77,6 @@ namespace MWScript
             virtual void report (const std::string& message);
             ///< By default, do nothing.
 
-            virtual bool menuMode();
-
             virtual int getGlobalShort (const std::string& name) const;
 
             virtual int getGlobalLong (const std::string& name) const;
@@ -124,8 +122,6 @@ namespace MWScript
             void executeActivation(MWWorld::Ptr ptr, MWWorld::Ptr actor);
             ///< Execute the activation action for this ptr. If ptr is mActivated, mark activation as handled.
 
-            virtual float getSecondsPassed() const;
-
             virtual int getMemberShort (const std::string& id, const std::string& name, bool global) const;
 
             virtual int getMemberLong (const std::string& id, const std::string& name, bool global) const;
diff --git a/apps/openmw/mwscript/miscextensions.cpp b/apps/openmw/mwscript/miscextensions.cpp
index 915b3221c..89bf44701 100644
--- a/apps/openmw/mwscript/miscextensions.cpp
+++ b/apps/openmw/mwscript/miscextensions.cpp
@@ -12,6 +12,8 @@
 #include <components/interpreter/runtime.hpp>
 #include <components/interpreter/opcodes.hpp>
 
+#include <components/misc/rng.hpp>
+
 #include <components/esm/loadmgef.hpp>
 #include <components/esm/loadcrea.hpp>
 
@@ -78,6 +80,33 @@ namespace MWScript
 {
     namespace Misc
     {
+        class OpMenuMode : public Interpreter::Opcode0
+        {
+            public:
+
+                virtual void execute (Interpreter::Runtime& runtime)
+                {
+                    runtime.push (MWBase::Environment::get().getWindowManager()->isGuiMode());
+                }
+        };
+
+        class OpRandom : public Interpreter::Opcode0
+        {
+            public:
+
+                virtual void execute (Interpreter::Runtime& runtime)
+                {
+                    Interpreter::Type_Integer limit = runtime[0].mInteger;
+                    runtime.pop();
+
+                    if (limit<0)
+                        throw std::runtime_error (
+                            "random: argument out of range (Don't be so negative!)");
+
+                    runtime.push (static_cast<Interpreter::Type_Float>(::Misc::Rng::rollDice(limit))); // [o, limit)
+                }
+        };
+
         template<class R>
         class OpStartScript : public Interpreter::Opcode0
         {
@@ -116,6 +145,16 @@ namespace MWScript
                 }
         };
 
+        class OpGetSecondsPassed : public Interpreter::Opcode0
+        {
+            public:
+
+                virtual void execute (Interpreter::Runtime& runtime)
+                {
+                    runtime.push (MWBase::Environment::get().getFrameDuration());
+                }
+        };
+
         template<class R>
         class OpEnable : public Interpreter::Opcode0
         {
@@ -1530,10 +1569,13 @@ namespace MWScript
 
         void installOpcodes (Interpreter::Interpreter& interpreter)
         {
+            interpreter.installSegment5 (Compiler::Misc::opcodeMenuMode, new OpMenuMode);
+            interpreter.installSegment5 (Compiler::Misc::opcodeRandom, new OpRandom);
             interpreter.installSegment5 (Compiler::Misc::opcodeScriptRunning, new OpScriptRunning);
             interpreter.installSegment5 (Compiler::Misc::opcodeStartScript, new OpStartScript<ImplicitRef>);
             interpreter.installSegment5 (Compiler::Misc::opcodeStartScriptExplicit, new OpStartScript<ExplicitRef>);
             interpreter.installSegment5 (Compiler::Misc::opcodeStopScript, new OpStopScript);
+            interpreter.installSegment5 (Compiler::Misc::opcodeGetSecondsPassed, new OpGetSecondsPassed);
             interpreter.installSegment5 (Compiler::Misc::opcodeEnable, new OpEnable<ImplicitRef>);
             interpreter.installSegment5 (Compiler::Misc::opcodeEnableExplicit, new OpEnable<ExplicitRef>);
             interpreter.installSegment5 (Compiler::Misc::opcodeDisable, new OpDisable<ImplicitRef>);
diff --git a/components/compiler/exprparser.cpp b/components/compiler/exprparser.cpp
index 8e8f063bb..8c8fe640e 100644
--- a/components/compiler/exprparser.cpp
+++ b/components/compiler/exprparser.cpp
@@ -434,43 +434,6 @@ namespace Compiler
                 mNextOperand = false;
                 return true;
             }
-            else if (keyword==Scanner::K_menumode)
-            {
-                start();
-
-                mTokenLoc = loc;
-
-                Generator::menuMode (mCode);
-                mOperands.push_back ('l');
-
-                mNextOperand = false;
-                return true;
-            }
-            else if (keyword==Scanner::K_random)
-            {
-                start();
-
-                mTokenLoc = loc;
-                parseArguments ("l", scanner);
-
-                Generator::random (mCode);
-                mOperands.push_back ('f');
-
-                mNextOperand = false;
-                return true;
-            }
-            else if (keyword==Scanner::K_getsecondspassed)
-            {
-                start();
-
-                mTokenLoc = loc;
-
-                Generator::getSecondsPassed (mCode);
-                mOperands.push_back ('f');
-
-                mNextOperand = false;
-                return true;
-            }
             else
             {
                 // check for custom extensions
diff --git a/components/compiler/extensions0.cpp b/components/compiler/extensions0.cpp
index 02a68d891..c67af29c2 100644
--- a/components/compiler/extensions0.cpp
+++ b/components/compiler/extensions0.cpp
@@ -241,9 +241,12 @@ namespace Compiler
     {
         void registerExtensions (Extensions& extensions)
         {
+            extensions.registerFunction ("menumode", 'l', "", opcodeMenuMode);
+            extensions.registerFunction ("random", 'f', "l", opcodeRandom);
             extensions.registerFunction ("scriptrunning", 'l', "c", opcodeScriptRunning);
             extensions.registerInstruction ("startscript", "c", opcodeStartScript, opcodeStartScriptExplicit);
             extensions.registerInstruction ("stopscript", "c", opcodeStopScript);
+            extensions.registerFunction ("getsecondspassed", 'f', "", opcodeGetSecondsPassed);
             extensions.registerInstruction ("enable", "", opcodeEnable, opcodeEnableExplicit);
             extensions.registerInstruction ("disable", "", opcodeDisable, opcodeDisableExplicit);
             extensions.registerFunction ("getdisabled", 'l', "x", opcodeGetDisabled, opcodeGetDisabledExplicit);
diff --git a/components/compiler/generator.cpp b/components/compiler/generator.cpp
index c16df660c..2787488c2 100644
--- a/components/compiler/generator.cpp
+++ b/components/compiler/generator.cpp
@@ -222,11 +222,6 @@ namespace
         code.push_back (Compiler::Generator::segment5 (37));
     }
 
-    void opMenuMode (Compiler::Generator::CodeContainer& code)
-    {
-        code.push_back (Compiler::Generator::segment5 (38));
-    }
-
     void opStoreGlobalShort (Compiler::Generator::CodeContainer& code)
     {
         code.push_back (Compiler::Generator::segment5 (39));
@@ -286,16 +281,6 @@ namespace
     {
         code.push_back (Compiler::Generator::segment5 (global ? 70 : 64));
     }
-
-    void opRandom (Compiler::Generator::CodeContainer& code)
-    {
-        code.push_back (Compiler::Generator::segment5 (45));
-    }
-
-    void opGetSecondsPassed (Compiler::Generator::CodeContainer& code)
-    {
-        code.push_back (Compiler::Generator::segment5 (50));
-    }
 }
 
 namespace Compiler
@@ -590,11 +575,6 @@ namespace Compiler
             }
         }
 
-        void menuMode (CodeContainer& code)
-        {
-            opMenuMode (code);
-        }
-
         void assignToGlobal (CodeContainer& code, Literals& literals, char localType,
             const std::string& name, const CodeContainer& value, char valueType)
         {
@@ -751,15 +731,5 @@ namespace Compiler
                     assert (0);
             }
         }
-
-        void random (CodeContainer& code)
-        {
-            opRandom (code);
-        }
-
-        void getSecondsPassed (CodeContainer& code)
-        {
-            opGetSecondsPassed (code);
-        }
     }
 }
diff --git a/components/compiler/generator.hpp b/components/compiler/generator.hpp
index f4386f605..55bba2a75 100644
--- a/components/compiler/generator.hpp
+++ b/components/compiler/generator.hpp
@@ -91,8 +91,6 @@ namespace Compiler
 
         void compare (CodeContainer& code, char op, char valueType1, char valueType2);
 
-        void menuMode (CodeContainer& code);
-
         void assignToGlobal (CodeContainer& code, Literals& literals, char localType,
             const std::string& name, const CodeContainer& value, char valueType);
 
@@ -106,10 +104,6 @@ namespace Compiler
         void fetchMember (CodeContainer& code, Literals& literals, char memberType,
             const std::string& name, const std::string& id, bool global);
         ///< \param global Member of a global script instead of a script of a reference.
-
-        void random (CodeContainer& code);
-
-        void getSecondsPassed (CodeContainer& code);
     }
 }
 
diff --git a/components/compiler/lineparser.cpp b/components/compiler/lineparser.cpp
index eaa833800..326b5f9f6 100644
--- a/components/compiler/lineparser.cpp
+++ b/components/compiler/lineparser.cpp
@@ -433,18 +433,6 @@ namespace Compiler
             return true;
         }
 
-        if (mAllowExpression)
-        {
-            if (keyword==Scanner::K_getsquareroot || keyword==Scanner::K_menumode ||
-                keyword==Scanner::K_random || keyword==Scanner::K_getsecondspassed)
-            {
-                scanner.putbackKeyword (keyword, loc);
-                parseExpression (scanner, loc);
-                mState = EndState;
-                return true;
-            }
-        }
-
         return Parser::parseKeyword (keyword, loc, scanner);
     }
 
diff --git a/components/compiler/opcodes.hpp b/components/compiler/opcodes.hpp
index 72e3cea89..363e8bb85 100644
--- a/components/compiler/opcodes.hpp
+++ b/components/compiler/opcodes.hpp
@@ -201,9 +201,12 @@ namespace Compiler
 
     namespace Misc
     {
+        const int opcodeMenuMode = 38;
+        const int opcodeRandom = 45;
         const int opcodeScriptRunning = 46;
         const int opcodeStartScript = 47;
         const int opcodeStopScript = 48;
+        const int opcodeGetSecondsPassed = 50;
         const int opcodeEnable = 51;
         const int opcodeDisable = 52;
         const int opcodeGetDisabled = 53;
diff --git a/components/compiler/scanner.cpp b/components/compiler/scanner.cpp
index 2be679cd2..9f2865868 100644
--- a/components/compiler/scanner.cpp
+++ b/components/compiler/scanner.cpp
@@ -266,9 +266,6 @@ namespace Compiler
         "messagebox",
         "set", "to",
         "getsquareroot",
-        "menumode",
-        "random",
-        "getsecondspassed",
         0
     };
 
diff --git a/components/compiler/scanner.hpp b/components/compiler/scanner.hpp
index 973761898..b6321a92d 100644
--- a/components/compiler/scanner.hpp
+++ b/components/compiler/scanner.hpp
@@ -208,10 +208,7 @@ namespace Compiler
                 K_return,
                 K_messagebox,
                 K_set, K_to,
-                K_getsquareroot,
-                K_menumode,
-                K_random,
-                K_getsecondspassed
+                K_getsquareroot
             };
 
             enum special
diff --git a/components/compiler/stringparser.cpp b/components/compiler/stringparser.cpp
index a9974297d..1bacf7941 100644
--- a/components/compiler/stringparser.cpp
+++ b/components/compiler/stringparser.cpp
@@ -63,9 +63,7 @@ namespace Compiler
             keyword==Scanner::K_elseif || keyword==Scanner::K_while ||
             keyword==Scanner::K_endwhile || keyword==Scanner::K_return ||
             keyword==Scanner::K_messagebox || keyword==Scanner::K_set ||
-            keyword==Scanner::K_to || keyword==Scanner::K_getsquareroot ||
-            keyword==Scanner::K_menumode || keyword==Scanner::K_random ||
-            keyword==Scanner::K_getsecondspassed)
+            keyword==Scanner::K_to || keyword==Scanner::K_getsquareroot)
         {
             return parseName (loc.mLiteral, loc, scanner);
         }
diff --git a/components/interpreter/context.hpp b/components/interpreter/context.hpp
index 30744dcec..862018bdc 100644
--- a/components/interpreter/context.hpp
+++ b/components/interpreter/context.hpp
@@ -35,8 +35,6 @@ namespace Interpreter
 
             virtual void report (const std::string& message) = 0;
 
-            virtual bool menuMode() = 0;
-
             virtual int getGlobalShort (const std::string& name) const = 0;
 
             virtual int getGlobalLong (const std::string& name) const = 0;
@@ -79,8 +77,6 @@ namespace Interpreter
 
             virtual std::string getCurrentCellName() const = 0;
 
-            virtual float getSecondsPassed() const = 0;
-
             virtual int getMemberShort (const std::string& id, const std::string& name, bool global) const = 0;
 
             virtual int getMemberLong (const std::string& id, const std::string& name, bool global) const = 0;
diff --git a/components/interpreter/installopcodes.cpp b/components/interpreter/installopcodes.cpp
index dfaabe325..afee36bc2 100644
--- a/components/interpreter/installopcodes.cpp
+++ b/components/interpreter/installopcodes.cpp
@@ -95,9 +95,6 @@ namespace Interpreter
 
         // misc
         interpreter.installSegment3 (0, new OpMessageBox);
-        interpreter.installSegment5 (38, new OpMenuMode);
-        interpreter.installSegment5 (45, new OpRandom);
-        interpreter.installSegment5 (50, new OpGetSecondsPassed);
         interpreter.installSegment5 (58, new OpReport);
     }
 }
diff --git a/components/interpreter/miscopcodes.hpp b/components/interpreter/miscopcodes.hpp
index e1b1843ef..07bd84ec9 100644
--- a/components/interpreter/miscopcodes.hpp
+++ b/components/interpreter/miscopcodes.hpp
@@ -11,7 +11,6 @@
 #include "runtime.hpp"
 #include "defines.hpp"
 
-#include <components/misc/rng.hpp>
 #include <components/misc/messageformatparser.hpp>
 
 namespace Interpreter
@@ -168,44 +167,6 @@ namespace Interpreter
             }
     };
 
-    class OpMenuMode : public Opcode0
-    {
-        public:
-
-            virtual void execute (Runtime& runtime)
-            {
-                runtime.push (runtime.getContext().menuMode());
-            }
-    };
-
-    class OpRandom : public Opcode0
-    {
-        public:
-
-            virtual void execute (Runtime& runtime)
-            {
-                Type_Integer limit = runtime[0].mInteger;
-
-                if (limit<0)
-                    throw std::runtime_error (
-                        "random: argument out of range (Don't be so negative!)");
-
-                runtime[0].mFloat = static_cast<Type_Float>(Misc::Rng::rollDice(limit)); // [o, limit)
-            }
-    };
-
-    class OpGetSecondsPassed : public Opcode0
-    {
-        public:
-
-            virtual void execute (Runtime& runtime)
-            {
-                Type_Float duration = runtime.getContext().getSecondsPassed();
-
-                runtime.push (duration);
-            }
-    };
-
 }
 
 #endif