diff --git a/src/js/actions/GlobalStateActions.js b/src/js/actions/GlobalStateActions.js
index 58f3f121..f04a747e 100644
--- a/src/js/actions/GlobalStateActions.js
+++ b/src/js/actions/GlobalStateActions.js
@@ -14,6 +14,12 @@ var GlobalStateActions = {
     });
   },
 
+  levelSolved: function() {
+    AppDispatcher.handleViewAction({
+      type: ActionTypes.LEVEL_SOLVED,
+    });
+  },
+
   changeFlipTreeY: function(flipTreeY) {
     AppDispatcher.handleViewAction({
       type: ActionTypes.CHANGE_FLIP_TREE_Y,
diff --git a/src/js/constants/AppConstants.js b/src/js/constants/AppConstants.js
index 393dc556..b738fbfa 100644
--- a/src/js/constants/AppConstants.js
+++ b/src/js/constants/AppConstants.js
@@ -25,7 +25,13 @@ module.exports = {
     CHANGE_FLIP_TREE_Y: null,
     SUBMIT_COMMAND: null,
     CHANGE_LOCALE: null,
-    CHANGE_LOCALE_FROM_HEADER: null
+    CHANGE_LOCALE_FROM_HEADER: null,
+    /**
+     * only dispatched when you actually
+     * solve the level, not ask for solution
+     * or solve it again.
+     */
+    SOLVE_LEVEL: null
   }),
 
   PayloadSources: keyMirror({
diff --git a/src/js/level/index.js b/src/js/level/index.js
index 2682e2ce..9a5a057d 100644
--- a/src/js/level/index.js
+++ b/src/js/level/index.js
@@ -10,6 +10,7 @@ var React = require('react');
 var Errors = require('../util/errors');
 var Sandbox = require('../sandbox/').Sandbox;
 var GlobalStateActions = require('../actions/GlobalStateActions');
+var GlobalStateStore = require('../stores/GlobalStateStore');
 var LevelActions = require('../actions/LevelActions');
 var LevelStore = require('../stores/LevelStore');
 var Visualization = require('../visuals/visualization').Visualization;
@@ -446,6 +447,32 @@ var Level = Sandbox.extend({
       this.wasResetAfterSolved;
     var skipFinishAnimation = this.wasResetAfterSolved;
 
+    if (!skipFinishAnimation) {
+      GlobalStateActions.levelSolved();
+    }
+
+    /**
+     * Speed up the animation each time we see it.
+     */
+    var speed = 1.0;
+    switch (GlobalStateStore.getNumLevelsSolved()) {
+      case 2:
+        speed = 1.5;
+        break;
+      case 3:
+        speed = 1.8;
+        break;
+      case 4:
+        speed = 2.1;
+        break;
+      case 5:
+        speed = 2.4;
+        break;
+    }
+    if (GlobalStateStore.getNumLevelsSolved() > 5) {
+      speed = 2.5;
+    }
+
     var finishAnimationChain = null;
     if (skipFinishAnimation) {
       var deferred = Q.defer();
@@ -457,10 +484,10 @@ var Level = Sandbox.extend({
       );
     } else {
       GlobalStateActions.changeIsAnimating(true);
-      finishAnimationChain = this.mainVis.gitVisuals.finishAnimation();
+      finishAnimationChain = this.mainVis.gitVisuals.finishAnimation(speed);
       if (this.mainVis.originVis) {
         finishAnimationChain = finishAnimationChain.then(
-          this.mainVis.originVis.gitVisuals.finishAnimation()
+          this.mainVis.originVis.gitVisuals.finishAnimation(speed)
         );
       }
     }
diff --git a/src/js/stores/GlobalStateStore.js b/src/js/stores/GlobalStateStore.js
index 03215072..35897d2d 100644
--- a/src/js/stores/GlobalStateStore.js
+++ b/src/js/stores/GlobalStateStore.js
@@ -10,6 +10,7 @@ var ActionTypes = AppConstants.ActionTypes;
 
 var _isAnimating = false;
 var _flipTreeY = false;
+var _numLevelsSolved = 0;
 
 var GlobalStateStore = assign(
 {},
@@ -24,6 +25,10 @@ AppConstants.StoreSubscribePrototype,
     return _flipTreeY;
   },
 
+  getNumLevelsSolved: function() {
+    return _numLevelsSolved;
+  },
+
   dispatchToken: AppDispatcher.register(function(payload) {
     var action = payload.action;
     var shouldInform = false;
@@ -37,6 +42,10 @@ AppConstants.StoreSubscribePrototype,
         _flipTreeY = action.flipTreeY;
         shouldInform = true;
         break;
+      case ActionTypes.LEVEL_SOLVED:
+        _numLevelsSolved++;
+        shouldInform = true;
+        break;
     }
 
     if (shouldInform) {
diff --git a/src/js/util/debug.js b/src/js/util/debug.js
index f70b6dfb..a9359f1d 100644
--- a/src/js/util/debug.js
+++ b/src/js/util/debug.js
@@ -9,6 +9,8 @@ var toGlobalize = {
   LevelActions: require('../actions/LevelActions'),
   LevelStore: require('../stores/LevelStore'),
   LocaleActions: require('../actions/LocaleActions'),
+  GlobalStateActions: require('../actions/GlobalStateActions'),
+  GlobalStateStore: require('../stores/GlobalStateStore'),
   LocaleStore: require('../stores/LocaleStore'),
   Levels: require('../graph/treeCompare'),
   Constants: require('../util/constants'),
diff --git a/src/js/visuals/index.js b/src/js/visuals/index.js
index 5ade50f6..3897fbd9 100644
--- a/src/js/visuals/index.js
+++ b/src/js/visuals/index.js
@@ -208,7 +208,12 @@ GitVisuals.prototype.animateAllAttrKeys = function(keys, attr, speed, easing) {
   return deferred.promise;
 };
 
-GitVisuals.prototype.finishAnimation = function() {
+GitVisuals.prototype.finishAnimation = function(speed) {
+  speed = speed || 1.0;
+  if (!speed) {
+    throw new Error('need speed by time i finish animation' + speed);
+  }
+
   var _this = this;
   var deferred = Q.defer();
   var animationDone = Q.defer();
@@ -247,7 +252,7 @@ GitVisuals.prototype.finishAnimation = function() {
     return this.animateAllAttrKeys(
       { exclude: ['circle'] },
       { opacity: 0 },
-      defaultTime * 1.1
+      defaultTime * 1.1 / speed
     );
   }.bind(this))
   // then make circle radii bigger
@@ -255,7 +260,7 @@ GitVisuals.prototype.finishAnimation = function() {
     return this.animateAllAttrKeys(
       { exclude: ['arrow', 'rect', 'path', 'text'] },
       { r: nodeRadius * 2 },
-      defaultTime * 1.5
+      defaultTime * 1.5 / speed
     );
   }.bind(this))
   // then shrink em super fast
@@ -263,16 +268,16 @@ GitVisuals.prototype.finishAnimation = function() {
     return this.animateAllAttrKeys(
       { exclude: ['arrow', 'rect', 'path', 'text'] },
       { r: nodeRadius * 0.75 },
-      defaultTime * 0.5
+      defaultTime * 0.5 / speed
     );
   }.bind(this))
   // then explode them and display text
   .then(function() {
     makeText();
-    return this.explodeNodes();
+    return this.explodeNodes(speed);
   }.bind(this))
   .then(function() {
-    return this.explodeNodes();
+    return this.explodeNodes(speed);
   }.bind(this))
   // then fade circles (aka everything) in and back
   .then(function() {
@@ -305,11 +310,11 @@ GitVisuals.prototype.finishAnimation = function() {
   return animationDone.promise;
 };
 
-GitVisuals.prototype.explodeNodes = function() {
+GitVisuals.prototype.explodeNodes = function(speed) {
   var deferred = Q.defer();
   var funcs = [];
   _.each(this.visNodeMap, function(visNode) {
-    funcs.push(visNode.getExplodeStepFunc());
+    funcs.push(visNode.getExplodeStepFunc(speed));
   });
 
   var interval = setInterval(function() {
diff --git a/src/js/visuals/visNode.js b/src/js/visuals/visNode.js
index ca87f30a..1cb08d86 100644
--- a/src/js/visuals/visNode.js
+++ b/src/js/visuals/visNode.js
@@ -376,15 +376,18 @@ var VisNode = VisBase.extend({
     }, this);
   },
 
-  getExplodeStepFunc: function() {
+  getExplodeStepFunc: function(speed) {
+    if (!speed) {
+      throw new Error('need speed by now');
+    }
     var circle = this.get('circle');
 
     // decide on a speed
-    var speedMag = 20;
+    var speedMag = 20 / speed;
     // aim upwards
     var angle = Math.PI + Math.random() * 1 * Math.PI;
-    var gravity = 1 / 5;
-    var drag = 1 / 100;
+    var gravity = (1 / 5) * speed;
+    var drag = (1 / 100) * speed;
 
     var vx = speedMag * Math.cos(angle);
     var vy = speedMag * Math.sin(angle);
@@ -393,7 +396,7 @@ var VisNode = VisBase.extend({
 
     var maxWidth = this.gitVisuals.paper.width;
     var maxHeight = this.gitVisuals.paper.height;
-    var elasticity = 0.8;
+    var elasticity = 0.8 / speed;
     var dt = 1.0;
 
     var stepFunc = function() {
@@ -417,7 +420,7 @@ var VisNode = VisBase.extend({
         cy: y
       });
       // continuation calculation
-      if ((vx * vx + vy * vy) < 0.01 && Math.abs(y - maxHeight) === 0) {
+      if ((vx * vx + vy * vy) < 0.1 && Math.abs(y - maxHeight) <= 0.1) {
         // dont need to animate anymore, we are on ground
         return false;
       }