diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 5a8c8ce..8b269ae 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -11,11 +11,11 @@ Please follow the house rules to have a bigger chance of your contribution being
  - If you want to modify the CSS, please edit the SCSS files present in `style/`: `main.scss` and others. Don't edit the `main.css`, because it's supposed to be generated.  
  In order to compile your SCSS modifications, you need to use the `sass` gem (install it by running `gem install sass` once Ruby is installed).  
  To run SASS, simply use the following command:  
- `sass --watch style/main.scss`  
+ `sass --unix-newlines --watch style/main.scss`  
  SASS will automatically recompile your css when changed.
  - `Rakefile` contains some tasks that help during development. Feel free to add useful tasks if needed.
  - Please use 2-space indentation when editing the JavaScript. A `.jshintrc` file is present, which will help your code to follow the guidelines if you install and run `jshint`.
- - Please test your modification thouroughly before submitting your Pull Request.
+ - Please test your modification thoroughly before submitting your Pull Request.
 
 ### Changes that might not be accepted
 We have to be conservative with the core game. This means that some modifications won't be merged, or will have to be evaluated carefully before being merged:
diff --git a/README.md b/README.md
index 1c4f46d..6b1da38 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ Other notable contributors:
 
  - [TimPetricola](https://github.com/TimPetricola) added best score storage
  - [chrisprice](https://github.com/chrisprice) added custom code for swipe handling on mobile
- - [elektryk](https://github.com/elektryk) made swipes work on Windows Phone
+ - [marcingajda](https://github.com/marcingajda) made swipes work on Windows Phone
  - [mgarciaisaia](https://github.com/mgarciaisaia) added support for Android 2.3
 
 Many thanks to [rayhaanj](https://github.com/rayhaanj), [Mechazawa](https://github.com/Mechazawa), [grant](https://github.com/grant), [remram44](https://github.com/remram44) and [ghoullier](https://github.com/ghoullier) for the many other good contributions.
@@ -21,7 +21,7 @@ Many thanks to [rayhaanj](https://github.com/rayhaanj), [Mechazawa](https://gith
 ### Screenshot
 
 <p align="center">
-  <img src="http://pictures.gabrielecirulli.com/2048-20140309-234100.png" alt="Screenshot"/>
+  <img src="https://cloud.githubusercontent.com/assets/1175750/8614312/280e5dc2-26f1-11e5-9f1f-5891c3ca8b26.png" alt="Screenshot"/>
 </p>
 
 That screenshot is fake, by the way. I never reached 2048 :smile:
diff --git a/cache.appcache b/cache.appcache
index 1af2ea5..fa4f792 100644
--- a/cache.appcache
+++ b/cache.appcache
@@ -3,7 +3,7 @@ CACHE MANIFEST
 # Adds the ability to play the game online.
 # The following comment needs to be updated whenever a change is made.
 # Run `rake appcache:update` to do so
-# Updated: 2014-12-10T12:13:34-08:00
+# Updated: 2015-10-20T11:14:00-08:00
 
 # Main page
 index.html
diff --git a/js/keyboard_input_manager.js b/js/keyboard_input_manager.js
index e8768ed..a39484e 100644
--- a/js/keyboard_input_manager.js
+++ b/js/keyboard_input_manager.js
@@ -82,7 +82,7 @@ KeyboardInputManager.prototype.listen = function () {
 
   gameContainer.addEventListener(this.eventTouchstart, function (event) {
     if ((!window.navigator.msPointerEnabled && event.touches.length > 1) ||
-        event.targetTouches > 1 ||
+        event.targetTouches.length > 1 ||
         self.targetIsInput(event)) {
       return; // Ignore if touching with more than 1 finger or touching input
     }
@@ -104,7 +104,7 @@ KeyboardInputManager.prototype.listen = function () {
 
   gameContainer.addEventListener(this.eventTouchend, function (event) {
     if ((!window.navigator.msPointerEnabled && event.touches.length > 0) ||
-        event.targetTouches > 0 ||
+        event.targetTouches.length > 0 ||
         self.targetIsInput(event)) {
       return; // Ignore if still touching with one or more fingers or input
     }
diff --git a/style/helpers.scss b/style/helpers.scss
index 3786bc0..f0e24d5 100644
--- a/style/helpers.scss
+++ b/style/helpers.scss
@@ -48,6 +48,7 @@
 @mixin transform($args...) {
   -webkit-transform: $args;
   -moz-transform: $args;
+  -ms-transform: $args;
   transform: $args;
 }
 
diff --git a/style/main.css b/style/main.css
index e9c4f38..ba71460 100644
--- a/style/main.css
+++ b/style/main.css
@@ -314,66 +314,82 @@ hr {
 .tile.tile-position-1-1 {
   -webkit-transform: translate(0px, 0px);
   -moz-transform: translate(0px, 0px);
+  -ms-transform: translate(0px, 0px);
   transform: translate(0px, 0px); }
 .tile.tile-position-1-2 {
   -webkit-transform: translate(0px, 121px);
   -moz-transform: translate(0px, 121px);
+  -ms-transform: translate(0px, 121px);
   transform: translate(0px, 121px); }
 .tile.tile-position-1-3 {
   -webkit-transform: translate(0px, 242px);
   -moz-transform: translate(0px, 242px);
+  -ms-transform: translate(0px, 242px);
   transform: translate(0px, 242px); }
 .tile.tile-position-1-4 {
   -webkit-transform: translate(0px, 363px);
   -moz-transform: translate(0px, 363px);
+  -ms-transform: translate(0px, 363px);
   transform: translate(0px, 363px); }
 .tile.tile-position-2-1 {
   -webkit-transform: translate(121px, 0px);
   -moz-transform: translate(121px, 0px);
+  -ms-transform: translate(121px, 0px);
   transform: translate(121px, 0px); }
 .tile.tile-position-2-2 {
   -webkit-transform: translate(121px, 121px);
   -moz-transform: translate(121px, 121px);
+  -ms-transform: translate(121px, 121px);
   transform: translate(121px, 121px); }
 .tile.tile-position-2-3 {
   -webkit-transform: translate(121px, 242px);
   -moz-transform: translate(121px, 242px);
+  -ms-transform: translate(121px, 242px);
   transform: translate(121px, 242px); }
 .tile.tile-position-2-4 {
   -webkit-transform: translate(121px, 363px);
   -moz-transform: translate(121px, 363px);
+  -ms-transform: translate(121px, 363px);
   transform: translate(121px, 363px); }
 .tile.tile-position-3-1 {
   -webkit-transform: translate(242px, 0px);
   -moz-transform: translate(242px, 0px);
+  -ms-transform: translate(242px, 0px);
   transform: translate(242px, 0px); }
 .tile.tile-position-3-2 {
   -webkit-transform: translate(242px, 121px);
   -moz-transform: translate(242px, 121px);
+  -ms-transform: translate(242px, 121px);
   transform: translate(242px, 121px); }
 .tile.tile-position-3-3 {
   -webkit-transform: translate(242px, 242px);
   -moz-transform: translate(242px, 242px);
+  -ms-transform: translate(242px, 242px);
   transform: translate(242px, 242px); }
 .tile.tile-position-3-4 {
   -webkit-transform: translate(242px, 363px);
   -moz-transform: translate(242px, 363px);
+  -ms-transform: translate(242px, 363px);
   transform: translate(242px, 363px); }
 .tile.tile-position-4-1 {
   -webkit-transform: translate(363px, 0px);
   -moz-transform: translate(363px, 0px);
+  -ms-transform: translate(363px, 0px);
   transform: translate(363px, 0px); }
 .tile.tile-position-4-2 {
   -webkit-transform: translate(363px, 121px);
   -moz-transform: translate(363px, 121px);
+  -ms-transform: translate(363px, 121px);
   transform: translate(363px, 121px); }
 .tile.tile-position-4-3 {
   -webkit-transform: translate(363px, 242px);
   -moz-transform: translate(363px, 242px);
+  -ms-transform: translate(363px, 242px);
   transform: translate(363px, 242px); }
 .tile.tile-position-4-4 {
   -webkit-transform: translate(363px, 363px);
   -moz-transform: translate(363px, 363px);
+  -ms-transform: translate(363px, 363px);
   transform: translate(363px, 363px); }
 
 .tile {
@@ -462,36 +478,42 @@ hr {
     opacity: 0;
     -webkit-transform: scale(0);
     -moz-transform: scale(0);
+    -ms-transform: scale(0);
     transform: scale(0); }
 
   100% {
     opacity: 1;
     -webkit-transform: scale(1);
     -moz-transform: scale(1);
+    -ms-transform: scale(1);
     transform: scale(1); } }
 @-moz-keyframes appear {
   0% {
     opacity: 0;
     -webkit-transform: scale(0);
     -moz-transform: scale(0);
+    -ms-transform: scale(0);
     transform: scale(0); }
 
   100% {
     opacity: 1;
     -webkit-transform: scale(1);
     -moz-transform: scale(1);
+    -ms-transform: scale(1);
     transform: scale(1); } }
 @keyframes appear {
   0% {
     opacity: 0;
     -webkit-transform: scale(0);
     -moz-transform: scale(0);
+    -ms-transform: scale(0);
     transform: scale(0); }
 
   100% {
     opacity: 1;
     -webkit-transform: scale(1);
     -moz-transform: scale(1);
+    -ms-transform: scale(1);
     transform: scale(1); } }
 .tile-new .tile-inner {
   -webkit-animation: appear 200ms ease 100ms;
@@ -505,46 +527,55 @@ hr {
   0% {
     -webkit-transform: scale(0);
     -moz-transform: scale(0);
+    -ms-transform: scale(0);
     transform: scale(0); }
 
   50% {
     -webkit-transform: scale(1.2);
     -moz-transform: scale(1.2);
+    -ms-transform: scale(1.2);
     transform: scale(1.2); }
 
   100% {
     -webkit-transform: scale(1);
     -moz-transform: scale(1);
+    -ms-transform: scale(1);
     transform: scale(1); } }
 @-moz-keyframes pop {
   0% {
     -webkit-transform: scale(0);
     -moz-transform: scale(0);
+    -ms-transform: scale(0);
     transform: scale(0); }
 
   50% {
     -webkit-transform: scale(1.2);
     -moz-transform: scale(1.2);
+    -ms-transform: scale(1.2);
     transform: scale(1.2); }
 
   100% {
     -webkit-transform: scale(1);
     -moz-transform: scale(1);
+    -ms-transform: scale(1);
     transform: scale(1); } }
 @keyframes pop {
   0% {
     -webkit-transform: scale(0);
     -moz-transform: scale(0);
+    -ms-transform: scale(0);
     transform: scale(0); }
 
   50% {
     -webkit-transform: scale(1.2);
     -moz-transform: scale(1.2);
+    -ms-transform: scale(1.2);
     transform: scale(1.2); }
 
   100% {
     -webkit-transform: scale(1);
     -moz-transform: scale(1);
+    -ms-transform: scale(1);
     transform: scale(1); } }
 .tile-merged .tile-inner {
   z-index: 20;
@@ -753,66 +784,82 @@ hr {
   .tile.tile-position-1-1 {
     -webkit-transform: translate(0px, 0px);
     -moz-transform: translate(0px, 0px);
+    -ms-transform: translate(0px, 0px);
     transform: translate(0px, 0px); }
   .tile.tile-position-1-2 {
     -webkit-transform: translate(0px, 67px);
     -moz-transform: translate(0px, 67px);
+    -ms-transform: translate(0px, 67px);
     transform: translate(0px, 67px); }
   .tile.tile-position-1-3 {
     -webkit-transform: translate(0px, 135px);
     -moz-transform: translate(0px, 135px);
+    -ms-transform: translate(0px, 135px);
     transform: translate(0px, 135px); }
   .tile.tile-position-1-4 {
     -webkit-transform: translate(0px, 202px);
     -moz-transform: translate(0px, 202px);
+    -ms-transform: translate(0px, 202px);
     transform: translate(0px, 202px); }
   .tile.tile-position-2-1 {
     -webkit-transform: translate(67px, 0px);
     -moz-transform: translate(67px, 0px);
+    -ms-transform: translate(67px, 0px);
     transform: translate(67px, 0px); }
   .tile.tile-position-2-2 {
     -webkit-transform: translate(67px, 67px);
     -moz-transform: translate(67px, 67px);
+    -ms-transform: translate(67px, 67px);
     transform: translate(67px, 67px); }
   .tile.tile-position-2-3 {
     -webkit-transform: translate(67px, 135px);
     -moz-transform: translate(67px, 135px);
+    -ms-transform: translate(67px, 135px);
     transform: translate(67px, 135px); }
   .tile.tile-position-2-4 {
     -webkit-transform: translate(67px, 202px);
     -moz-transform: translate(67px, 202px);
+    -ms-transform: translate(67px, 202px);
     transform: translate(67px, 202px); }
   .tile.tile-position-3-1 {
     -webkit-transform: translate(135px, 0px);
     -moz-transform: translate(135px, 0px);
+    -ms-transform: translate(135px, 0px);
     transform: translate(135px, 0px); }
   .tile.tile-position-3-2 {
     -webkit-transform: translate(135px, 67px);
     -moz-transform: translate(135px, 67px);
+    -ms-transform: translate(135px, 67px);
     transform: translate(135px, 67px); }
   .tile.tile-position-3-3 {
     -webkit-transform: translate(135px, 135px);
     -moz-transform: translate(135px, 135px);
+    -ms-transform: translate(135px, 135px);
     transform: translate(135px, 135px); }
   .tile.tile-position-3-4 {
     -webkit-transform: translate(135px, 202px);
     -moz-transform: translate(135px, 202px);
+    -ms-transform: translate(135px, 202px);
     transform: translate(135px, 202px); }
   .tile.tile-position-4-1 {
     -webkit-transform: translate(202px, 0px);
     -moz-transform: translate(202px, 0px);
+    -ms-transform: translate(202px, 0px);
     transform: translate(202px, 0px); }
   .tile.tile-position-4-2 {
     -webkit-transform: translate(202px, 67px);
     -moz-transform: translate(202px, 67px);
+    -ms-transform: translate(202px, 67px);
     transform: translate(202px, 67px); }
   .tile.tile-position-4-3 {
     -webkit-transform: translate(202px, 135px);
     -moz-transform: translate(202px, 135px);
+    -ms-transform: translate(202px, 135px);
     transform: translate(202px, 135px); }
   .tile.tile-position-4-4 {
     -webkit-transform: translate(202px, 202px);
     -moz-transform: translate(202px, 202px);
+    -ms-transform: translate(202px, 202px);
     transform: translate(202px, 202px); }
 
   .tile .tile-inner {