fixes, and toned down compression on track3.mp3

js/entities.js

 	this.invincibleTimeout = null;
 	this.started = false;
 	this.rotation = 0;
-	this.bigBox = new Box(60, 40, { x: -30, y: -20 });
+	this.bigBox = new Box(0, 0);
 	this.box = new Box();
 	this.shape.push(this.box);
 
+	this.bigShape = new Shape(this);
+	this.bigShape.push(new Box(100, 70, { x: -50, y: -35 }));
+
 	this.erectLevel = 0;
 	this.rise();
 
 		if (ent === this)
 			continue;
 
-		if (!this.shape.collidesWith(ent.shape))
-			continue;
-
-		if (ent instanceof Obstacle) {
+		if (ent instanceof Obstacle && this.shape.collidesWith(ent.shape)) {
 			this.lower();
 			return;
-		} else if (ent instanceof PowerUp) {
+		} else if (ent instanceof PowerUp && this.bigShape.collidesWith(ent.shape)) {
 			this.rise();
 			ent.dead = true;
 		}

js/game.js

 		if (ent.dead) {
 			if (i + 1 === this.entities.length) {
 				this.entities.pop();
+				continue;
 			} else {
 				this.entities[i] = this.entities.pop();
 				ent = this.entities[i];
 
 			// Remove dead entities, replace them with the last entity
 			if (ent.dead) {
-				if (i + 1 === this.entities.length) {
+				if (i + 1 === layer.length) {
 					layer.pop();
+					continue;
 				} else {
 					layer[j] = layer.pop();
 					ent = layer[j];