diff --git a/mario/mario.cpp b/mario/mario.cpp
index fa52e76..f848838 100644
--- a/mario/mario.cpp
+++ b/mario/mario.cpp
@@ -27,10 +27,10 @@ Mario::Mario(int x, int y, const std::shared_ptr< SDLPP::Renderer > &renderer) :
         SDLPP::RectColider( 0.9, 0, 0.1, 0.1, MARIO_TOP_LEFT_DETECT ) );
     top_collision = std::make_shared<SDLPP::RectColider>( 0.5, 0, 0.2, 0.15, MARIO_TOP_DETECT );
     addCollision( top_collision );
-    addCollision(
-        SDLPP::RectColider( 0, 0, 1, 1, MARIO_ID ) );
+    addCollision( SDLPP::RectColider( 0, 1, 1, 0.2, MARIO_ENEMY_DETECT ) );
     setColiderColor("#FF0000");
     setStatic( false );
+    bounce_speed *= 4;
 }
 Mario::Mario(const std::shared_ptr< SDLPP::Renderer > &renderer) : Mario(0, 0, renderer) {}
 void Mario::walkLeft() {
@@ -88,6 +88,9 @@ void Mario::handleVisitor(SDLPP::Visitor &visitor) {
         resetMovementY();
         stop_jump = true;
     }
+    if(m_visitor.shouldBounce()) {
+        addMovement(0, -bounce_speed);
+    }
     // make sure Mario isn't stuck inside a wall
     // TODO more readable function names
     if ( m_visitor.isStopped() ) {
@@ -129,6 +132,7 @@ void Mario::stopJump() {
 }
 
 void Mario::custom_move( int ticks ) {
+    MarioBlock::custom_move(ticks);
     if(!jumping && on_ground)
         return;
     if(getMovement().getY() >= 1.0625 * jump_movement)
@@ -155,5 +159,6 @@ void Mario::visit(SDLPP::Visitor &visitor) {
 }
 
 void Mario::setWorldTypeSrc(LandType::Value /*UNUSED*/) {
+    MarioBlock::setWorldTypeSrc(LandType::OVERWORLD);
     // TODO
 }
diff --git a/mario/mario.hpp b/mario/mario.hpp
index 72807a9..2032940 100644
--- a/mario/mario.hpp
+++ b/mario/mario.hpp
@@ -20,7 +20,7 @@ public:
 
 private:
     bool faces_right = true;
-    double side_movement = 0.39;
+    double side_movement = 0.19;
     double jump_movement = 1.0;
     bool jumping = false;
     bool stop_jump = false;
diff --git a/mario/visitors/mario_visitor.cpp b/mario/visitors/mario_visitor.cpp
index ab78703..812baab 100644
--- a/mario/visitors/mario_visitor.cpp
+++ b/mario/visitors/mario_visitor.cpp
@@ -53,6 +53,14 @@ void MarioVisitor::visit( const SDLPP::RenderObject &obj ) {
         death = true;
         _quit = true;
         break;
+    case GOOMBA_ID:
+        if(from != MARIO_FLOOR_DETECT && from != MARIO_ENEMY_DETECT) {
+            death = true;
+            _quit = true;
+        } else {
+            _bounce = true;
+        }
+        break;
     case STOP_MOVEMENT:
         stop = true;
         newX = obj.getDoubleRect().first.getX() +
diff --git a/mario/visitors/mario_visitor.hpp b/mario/visitors/mario_visitor.hpp
index 43c58bf..5192fa9 100644
--- a/mario/visitors/mario_visitor.hpp
+++ b/mario/visitors/mario_visitor.hpp
@@ -100,6 +100,10 @@ public:
         _moving_objects.push_back(mushroom);
     }
 
+    bool shouldBounce() {
+        return _bounce;
+    }
+
 private:
     bool onGround = false;
     double groundY = 0;
@@ -122,6 +126,7 @@ private:
     int &_coin_count;
     bool mushroom = false;
     std::vector< std::shared_ptr< MarioBlock > > &_moving_objects;
+    bool _bounce = false;
 };
 
 #endif