===================================================================
--- original.js
+++ change.js
@@ -561,12 +561,12 @@
 
 /**** 
 * Game Code
 ****/ 
+// Enumeration for game states
 /****************************************************************************************** */ 
 /************************************** GLOBAL VARIABLES ********************************** */
 /****************************************************************************************** */ 
-// Enumeration for game states
 var GAME_STATE = {
 	INIT: 'INIT',
 	MENU: 'MENU',
 	HELP: 'HELP',
@@ -587,9 +587,9 @@
 var obstacleSpawnTicker = 0;
 var obstacleSpawnDistanceRate = 1.5; // Ratio of screen width between obstacles
 var obstacleJustPassed = false;
 var startingBlocks = [];
-var blockers = [];
+var blocker;
 var startX = 600;
 var aiJumpLeftLimit = -350;
 var aiJumpRightLimit = 2048 + 512;
 var finishLine;
@@ -858,9 +858,9 @@
 	startText.x = 2048 / 2; // Center horizontally
 	startText.y = 2732 / 2; // Center vertically
 	game.addChild(startText);
 	// TEMP DEBUG TEST BLOCKER
-	//var blocker = new Blocker(-1024, groundLevel - 200 - 475 * 1);
+	//blocker = new Blocker(-1024, groundLevel - 200 - 475 * 1);
 	//game.addChild(blocker);
 	gameState = GAME_STATE.MENU;
 }
 function cleanMenuState() {
@@ -1050,15 +1050,11 @@
 	finishLine = new FinishLine();
 	finishLine.x = 2048 * obstacleSpawnDistanceRate * (numberOfObstacles + 1) + 1024; // Start from the right edge      
 	finishLine.y = groundLevel + 200;
 	game.addChild(finishLine);
-	// Spawn Blockers
-	for (var line = 1; line < numberOfLines; line++) {
-		if (line == 3) {
-			blockers[line] = new Blocker(startX + 2048, linesGroundLevels[1] - 675); // TODO : Fic index 1
-			game.addChild(blockers[line]);
-		}
-	}
+	// Spawn Blocker
+	blocker = new Blocker(startX + 2048, linesGroundLevels[1] - 675);
+	game.addChild(blocker);
 }
 function updateObstacles() {
 	// Update obstacles
 	for (var line = 0; line < numberOfLines; line++) {
@@ -1143,9 +1139,9 @@
 		for (var line = 1; line < numberOfLines; line++) {
 			if (line == 1) {
 				log("Check finish for #3 at x=" + opponents[line - 1].x + "  vs   " + (finishLine.x + 512));
 			}
-			if (opponents[line - 1].x > finishLine.x + 512 && opponents[line - 1].isRunning) {
+			if (opponents[line - 1] && opponents[line - 1].x > finishLine.x + 512 && opponents[line - 1].isRunning) {
 				if (line == 1) {
 					log("OK #3 Passed the line !");
 				}
 				// stop opponents at finish
@@ -1175,10 +1171,9 @@
 					log("Line " + line + " : opponent " + opponents[line - 1].lineIndex + " collided with obstacle " + obstacle.lineIndex);
 					opponents[line - 1].isFalling = true;
 					opponents[line - 1].isOnGround = false;
 				}
-				if (blockers[line] && opponents[line - 1].isRunning && opponents[line - 1].head.intersects(blockers[line])) {
-					var blocker = blockers[line];
+				if (opponents[line - 1].isRunning && opponents[line - 1].head.intersects(blocker)) {
 					log("Line " + line + " : opponent " + opponents[line - 1].lineIndex + " collided with Blocker ", blocker);
 					LK.effects.flashScreen(0xff0000, 500); // Flash screen red for half a second
 					opponents[line - 1].isRunning = false;
 					opponents[line - 1].isBlocked = true;