diff --git a/ag.cc b/ag.cc
index 5dbf72d..138c83c 100644
--- a/ag.cc
+++ b/ag.cc
@@ -286,6 +286,138 @@ namespace ag
         return g_engine->clearEventHandler(L);
     }
 
+    static int addManagedObject(lua_State * L, bool is_static,
+            OdeWorld::GeomType geom_type, refptr< vector<float> > args)
+    {
+        int id = g_engine->addObject(is_static, geom_type, args);
+        createLuaObject(L, id);
+    }
+
+    static int createBoxSpecify(lua_State * L, bool is_static)
+    {
+        int argc = lua_gettop(L);
+        if (argc == 3 &&
+                lua_isnumber(L, 1) &&
+                lua_isnumber(L, 2) &&
+                lua_isnumber(L, 3))
+        {
+            refptr< vector<float> > args = new vector<float>();
+            args.push_back(lua_tonumber(L, 1));
+            args.push_back(lua_tonumber(L, 2));
+            args.push_back(lua_tonumber(L, 3));
+            addManagedObject(L, is_static, OdeWorld::BOX, args);
+        }
+        else
+            lua_pushnil(L);
+        return 1;
+    }
+
+    int createBox(lua_State * L)
+    {
+        return createBoxSpecify(L, false);
+    }
+
+    int createStaticBox(lua_State * L)
+    {
+        return createBoxSpecify(L, true);
+    }
+
+    static int createSphereSpecify(lua_State * L, bool is_static)
+    {
+        int argc = lua_gettop(L);
+        if (argc == 1 && lua_isnumber(L, 1))
+        {
+            refptr< vector<float> > args = new vector<float>();
+            args.push_back(lua_tonumber(L, 1));
+            addManagedObject(L, is_static, OdeWorld::SPHERE, args);
+        }
+        else
+            lua_pushnil(L);
+        return 1;
+    }
+
+    int createSphere(lua_State * L)
+    {
+        return createSphereSpecify(L, false);
+    }
+
+    int createStaticSphere(lua_State * L)
+    {
+        return createSphereSpecify(L, true);
+    }
+
+    static int createPlaneSpecify(lua_State * L, bool is_static)
+    {
+        int argc = lua_gettop(L);
+        if (argc == 3 &&
+                lua_isnumber(L, 1) &&
+                lua_isnumber(L, 2) &&
+                lua_isnumber(L, 3))
+        {
+            refptr< vector<float> > args = new vector<float>();
+            args.push_back(lua_tonumber(L, 1));
+            args.push_back(lua_tonumber(L, 2));
+            args.push_back(lua_tonumber(L, 3));
+            addManagedObject(L, is_static, OdeWorld::BOX, args);
+        }
+        else
+            lua_pushnil(L);
+        return 1;
+    }
+
+    int createPlane(lua_State * L)
+    {
+        return createPlaneSpecify(L, false);
+    }
+
+    int createStaticPlane(lua_State * L)
+    {
+        return createPlaneSpecify(L, true);
+    }
+
+    static int createCylinderSpecify(lua_State * L, bool is_static)
+    {
+        int argc = lua_gettop(L);
+        if (argc == 3 &&
+                lua_isnumber(L, 1) &&
+                lua_isnumber(L, 2) &&
+                lua_isnumber(L, 3))
+        {
+            refptr< vector<float> > args = new vector<float>();
+            args.push_back(lua_tonumber(L, 1));
+            args.push_back(lua_tonumber(L, 2));
+            args.push_back(lua_tonumber(L, 3));
+            addManagedObject(L, is_static, OdeWorld::BOX, args);
+        }
+        else
+            lua_pushnil(L);
+        return 1;
+    }
+
+    int createCylinder(lua_State * L)
+    {
+        return createCylinderSpecify(L, false);
+    }
+
+    int createStaticCylinder(lua_State * L)
+    {
+        return createCylinderSpecify(L, true);
+    }
+
+    static int createCCylinderSpecify(lua_State * L, bool is_static)
+    {
+    }
+
+    int createCCylinder(lua_State * L)
+    {
+        return createCCylinderSpecify(L, false);
+    }
+
+    int createStaticCCylinder(lua_State * L)
+    {
+        return createCCylinderSpecify(L, true);
+    }
+
     namespace object
     {
         static Engine::Object * getObject(lua_State * L, int index)
diff --git a/ag.h b/ag.h
index a236a28..760eb33 100644
--- a/ag.h
+++ b/ag.h
@@ -27,6 +27,17 @@ namespace ag
     int registerEventHandler(lua_State * L);
     int clearEventHandler(lua_State * L);
 
+    int createBox(lua_State * L);
+    int createStaticBox(lua_State * L);
+    int createSphere(lua_State * L);
+    int createStaticSphere(lua_State * L);
+    int createPlane(lua_State * L);
+    int createStaticPlane(lua_State * L);
+    int createCylinder(lua_State * L);
+    int createStaticCylinder(lua_State * L);
+    int createCCylinder(lua_State * L);
+    int createStaticCCylinder(lua_State * L);
+
     namespace object
     {
         int draw(lua_State * L);