diff --git a/sources/reactphysics3d/engine/PhysicsWorld.cpp b/sources/reactphysics3d/engine/PhysicsWorld.cpp
index dc764d85..47c5b37d 100644
--- a/sources/reactphysics3d/engine/PhysicsWorld.cpp
+++ b/sources/reactphysics3d/engine/PhysicsWorld.cpp
@@ -24,7 +24,7 @@
 using namespace reactphysics3d;
 
 // Constructor
-PhysicsWorld::PhysicsWorld(const Vector3D& gravity) : gravity(gravity) {
+PhysicsWorld::PhysicsWorld(const Vector3D& gravity) : gravity(gravity), isGravityOn(true) {
 
 }
 
@@ -32,6 +32,7 @@ PhysicsWorld::PhysicsWorld(const Vector3D& gravity) : gravity(gravity) {
 PhysicsWorld::PhysicsWorld(const PhysicsWorld& world) {
     bodyList = world.bodyList;
     gravity = world.gravity;
+    isGravityOn = world.isGravityOn;
 }
 
 // Destructor
diff --git a/sources/reactphysics3d/engine/PhysicsWorld.h b/sources/reactphysics3d/engine/PhysicsWorld.h
index 90b38f9d..92ddcf5f 100644
--- a/sources/reactphysics3d/engine/PhysicsWorld.h
+++ b/sources/reactphysics3d/engine/PhysicsWorld.h
@@ -40,6 +40,7 @@ class PhysicsWorld {
     protected :
         std::vector<Body*> bodyList;                // list that contains all bodies of the physics world
         Vector3D gravity;                           // Gravity vector of the world
+        bool isGravityOn;                           // True if the gravity force is on
 
     public :
         PhysicsWorld(const Vector3D& gravity);      // Constructor
@@ -49,6 +50,8 @@ class PhysicsWorld {
         void addBody(Body* body) throw(std::invalid_argument);                  // Add a body to the physics world
         void removeBody(Body const* const body) throw(std::invalid_argument);   // Remove a body from the physics world
         Vector3D getGravity() const;                                            // Return the gravity vector of the world
+        bool getIsGravityOn() const;                                            // Return if the gravity is on
+        void setIsGratityOn(bool isGravityOn);                                  // Set the isGravityOn attribute
         std::vector<Body*>::const_iterator getBodyListStartIterator() const;    // Return a start iterator on the body list
         std::vector<Body*>::const_iterator getBodyListEndIterator() const;      // Return a end iterator on the body list
 };
@@ -72,6 +75,16 @@ inline std::vector<Body*>::const_iterator PhysicsWorld::getBodyListEndIterator()
     return bodyList.end();
 }
 
+// Return if the gravity is on
+inline bool PhysicsWorld::getIsGravityOn() const {
+    return isGravityOn;
+}
+
+// Set the isGravityOn attribute
+inline void PhysicsWorld::setIsGratityOn(bool isGravityOn) {
+    this->isGravityOn = isGravityOn;
+}
+
 }   // End of the ReactPhysics3D namespace
 
  #endif