this should do the same right

Author: Iemand005

Games/Tetris/Tetris.js

@@ -148,9 +148,7 @@ Tetris.prototype.remove = function(tetromino) {
  */
 Tetromino.prototype.forEachBlock = function(callback) {
   this.layout.forEach(function(row, y) {
-    row.forEach(function(block, x) {
-      callback.call(this, block, x, y);
-    }, this);
+    row.forEach(callback.bind(this, y), this);
   }, this);
 }