diff --git a/demo1.cpp b/demo1.cpp
index 44ef89e..43d5920 100644
--- a/demo1.cpp
+++ b/demo1.cpp
@@ -688,6 +688,8 @@ pokitto.display.print(player.mCamera.direction);
 */
 }
 
+bool runReleased = false;
+
 int main()
 {
   pokitto.begin();
@@ -716,7 +718,7 @@ int main()
       dt = timeNow - previousTime;
       previousTime = timeNow;
 
-      int16_t horizontalStep = (dt * PLAYER_SPEED) / 1000;
+      int16_t horizontalStep = (dt * PLAYER_SPEED * (player.mRunning ? 2 : 1)) / 1000;
       int16_t rotationStep = (dt * PLAYER_ROTATION_SPEED) / 1000;
 
       Vector2D d = angleToDirection(player.mCamera.direction);
@@ -735,19 +737,29 @@ int main()
         d.y = d.y > 0 ? horizontalStep : -1 * horizontalStep;
       }
 
-      bool strafe = pokitto.aBtn();
-      bool lookUpDown = pokitto.cBtn();
+      bool aButton = pokitto.aBtn();
+
+      if (pokitto.cBtn())
+      {
+        if (runReleased)
+        {
+          player.mRunning = !player.mRunning;
+          runReleased = false;
+        }
+      }
+      else
+        runReleased = true;
 
       if (pokitto.upBtn())
       {
-        if (lookUpDown)
+        if (aButton)
           player.mCamera.shear = min(player.mCamera.shear + 10,60);
         else
           moveOffset = d;
       }
       else if (pokitto.downBtn())
       {
-        if (lookUpDown)
+        if (aButton)
           player.mCamera.shear = max(player.mCamera.shear - 10,-60);
         else
         {
@@ -758,7 +770,7 @@ int main()
       else
         player.mCamera.shear /= 2;
       
-      if (!lookUpDown)  
+      if (!aButton)  
         player.mCamera.shear /= 2;
 
       int addition = 0;
@@ -768,7 +780,7 @@ int main()
       else if (pokitto.leftBtn())
         addition = -1;
 
-      if (strafe)
+      if (aButton)
       {
         d = angleToDirection(player.mCamera.direction + UNITS_PER_SQUARE / 4);
         d.x = (d.x * horizontalStep * addition) / UNITS_PER_SQUARE;
diff --git a/general.hpp b/general.hpp
index db2534f..43d62c0 100644
--- a/general.hpp
+++ b/general.hpp
@@ -168,6 +168,7 @@ class Player
 public:
   Camera mCamera;
   Unit mVericalSpeed;
+  bool mRunning;
 
   Player()
   {
@@ -179,6 +180,7 @@ public:
     mCamera.resolution.y = SCREEN_HEIGHT;
     mCamera.shear = 0;
     mVericalSpeed = 0;
+    mRunning = false;
   }
 
   void setPosition(Unit x, Unit y)