===================================================================
--- original.js
+++ change.js
@@ -1,14 +1,16 @@
 var Interface = Container.expand(function (parent) {
 	var self = Container.call(this);
 	parent.addChild(self);
+	;
 	var score = 0;
+	;
 	var scoreTxt = new Text2(score.toString(), {
 		size: 150,
 		fill: "#ffffff"
 	});
 	scoreTxt.anchor.set(.5, 0);
-	LK.gui.topCenter.addChild(scoreTxt);
+	self.addChild(scoreTxt);
 	;
 	self.increment = increment;
 	self.gameOver = gameOver;
 	;
@@ -42,13 +44,15 @@
 	var type = (typeValue -= SPAWN_GOLD_CHANCE) < 0 ? 'gold' : (typeValue -= SPAWN_TNT_CHANCE) < 0 ? 'tnt' : (typeValue -= SPAWN_POINTS_CHANCE) < 0 ? 'points' : (typeValue -= SPAWN_STONE_CHANCE) < 0 ? 'stone' : 'basic';
 	var settings = BOX_SETTINGS[type];
 	var image = settings.images[Math.floor(Math.random() * settings.images.length)];
 	var speed = BOX_SPEED;
+	;
 	var boxGraphics = self.createAsset(image + 'Box', 'Box graphics', settings.x, settings.y);
 	var hitboxGraphics = self.createAsset('hitbox', 'Hitbox graphics', .5, .5);
 	hitboxGraphics.width = BOX_WIDTH;
 	hitboxGraphics.height = BOX_HEIGHT;
 	hitboxGraphics.alpha = 0;
+	;
 	self.alive = true;
 	self.active = false;
 	self.falling = true;
 	self.type = type;
@@ -78,9 +82,9 @@
 						break;
 					case 'tnt':
 						self.active = true;
 					default:
-						if (!player.invulnerable) {
+						if (!player.invulnerability) {
 							interface.gameOver();
 						}
 						break;
 				}
@@ -130,44 +134,49 @@
 	parent.addChild(self);
 	self.x = x;
 	self.y = y;
 	;
-	var countdown = SPAWN_CONST + Math.floor(Math.random() * SPAWN_VARIANCE);
+	var boxes = [];
+	var countdown = getCountdown();
 	;
 	self.count = 0;
-	self.boxes = [];
+	self.boxes = boxes;
 	self.squash = squash;
 	self.remove = remove;
 	self.update = update;
 	;
+	function getCountdown() {
+		return SPAWN_CONST + Math.floor(Math.random() * (SPAWN_VARIANCE + SPAWN_COUNT_VARIANCE * boxes.length));
+	}
 	function squash(target, index) {
 		var box = self.boxes[index];
 		if (box) {
 			box.squash(target);
 		}
 	}
 	function remove(box) {
 		var index = box.index;
-		self.boxes.splice(index, 1);
+		boxes.splice(index, 1);
 		if (!box.falling) {
 			self.count--;
 		}
-		for (var i = index; i < self.boxes.length; i++) {
-			var box = self.boxes[i];
+		for (var i = index; i < boxes.length; i++) {
+			var box = boxes[i];
 			box.index--;
 			if (!box.falling) {
 				self.count--;
 				box.falling = true;
 			}
 		}
 	}
-	function update(boxes) {
+	function update(args) {
 		if (--countdown <= 0) {
-			countdown = SPAWN_CONST + Math.floor(Math.random() * SPAWN_VARIANCE);
+			countdown = getCountdown();
 			if (self.count < COLUMN_VOLUME) {
-				var box = new Box(self, 0, SPAWN_OFFSET, self.boxes.length);
+				var {boxList} = args;
+				var box = new Box(self, 0, SPAWN_OFFSET, boxes.length);
+				boxList.push(box);
 				boxes.push(box);
-				self.boxes.push(box);
 			}
 		}
 	}
 });
@@ -184,9 +193,10 @@
 	var playerGraphics = self.createAsset('player', 'Player character', .5, .5);
 	playerGraphics.width = PLAYER_SIZE;
 	playerGraphics.height = PLAYER_SIZE;
 	;
-	self.invulnerable = true;
+	self.heightClimbed = 0;
+	self.invulnerability = true;
 	self.airborne = false;
 	self.move = move;
 	self.jump = jump;
 	self.update = update;
@@ -209,13 +219,13 @@
 			verticalSpeed = PLAYER_JUMP_SPEED;
 		}
 	}
 	function update(args) {
-		var {columns} = args;
+		var {interface, columnList} = args;
 		var colIndex = getColIndex();
 		var rowIndex = getRowIndex();
 		var targetX = (targetColumn + 0.5) * BOX_WIDTH;
-		var targetY = floorHeight - columns[colIndex].count * BOX_HEIGHT;
+		var targetY = floorHeight - columnList[colIndex].count * BOX_HEIGHT;
 		if (self.x !== targetX) {
 			var moveSpeed = Math.min(Math.abs(targetX - self.x), PLAYER_MOVE_SPEED);
 			self.x += Math.sign(targetX - self.x) * moveSpeed;
 			self.rotation = Math.PI * (self.x - STAGE_WIDTH / 2) / (BOX_WIDTH * 2);
@@ -237,32 +247,40 @@
 		}
 		if (!self.airborne) {
 			colIndex = getColIndex();
 			rowIndex = getRowIndex();
-			columns[colIndex].squash(self, rowIndex - 1);
+			columnList[colIndex].squash(self, rowIndex - 1);
+			if (rowIndex > self.heightClimbed) {
+				interface.increment((rowIndex - self.heightClimbed) * POINTS_GAIN_CLIMBING);
+				self.heightClimbed = rowIndex;
+			}
 		}
 	}
 });
+;
 var STAGE_WIDTH = 2048;
 var STAGE_HEIGHT = 2732;
+var STAGE_TICKS = 60;
 var CONTROL_SWIPE_DIST = 100;
-var CONTROL_TAP_TICKS = 20;
+var CONTROL_TAP_TICKS = STAGE_TICKS / 3;
 var NUM_COLUMNS = 9;
 var BOX_WIDTH = STAGE_WIDTH / NUM_COLUMNS;
 var BOX_HEIGHT = 0.75 * BOX_WIDTH;
 var PLAYER_SIZE = 0.8 * BOX_WIDTH;
 var PLAYER_GRAVITY = 0.5;
 var PLAYER_JUMP_SPEED = 20;
 var PLAYER_MOVE_SPEED = 15;
 var SPAWN_OFFSET = -100;
-var SPAWN_CONST = 30;
-var SPAWN_VARIANCE = 10 * 60 - SPAWN_CONST;
+var SPAWN_CONST = STAGE_TICKS / 2;
+var SPAWN_VARIANCE = 10 * STAGE_TICKS - SPAWN_CONST;
+var SPAWN_COUNT_VARIANCE = STAGE_TICKS / 4;
 var SPAWN_TNT_CHANCE = 0.03;
 var SPAWN_GOLD_CHANCE = 0.01;
 var SPAWN_POINTS_CHANCE = 0.05;
 var SPAWN_STONE_CHANCE = 0.1;
 var POINTS_GAIN_CLIMBING = 1;
 var POINTS_GAIN_PICKUP = 5;
+var INVULNERABILITY_TIME = 5 * STAGE_TICKS;
 var BOX_SPEED = 5;
 var BOX_GRAVITY = 0.2;
 var FLOOR_OFFSET = 100;
 var COLUMN_VOLUME = Math.floor((STAGE_HEIGHT - FLOOR_OFFSET) / BOX_HEIGHT) + 1;
@@ -292,24 +310,24 @@
 		y: .5,
 		images: ['stone']
 	}
 };
+;
 var Game = Container.expand(function () {
 	var self = Container.call(this);
 	;
 	var lastTouchX = null;
 	var lastTouchY = null;
 	var touchTime = null;
-	var boxes = [];
-	var columns = [];
+	var boxList = [];
+	var columnList = [];
+	;
 	var floor = self.addChild(new Floor(self, STAGE_WIDTH / 2, STAGE_HEIGHT));
 	for (var i = 0; i < NUM_COLUMNS; i++) {
-		columns.push(new Column(self, (i + 0.5) * BOX_WIDTH, 0));
+		columnList.push(new Column(self, (i + 0.5) * BOX_WIDTH, 0));
 	}
 	var player = self.addChild(new Player(self, STAGE_WIDTH / 2, STAGE_HEIGHT - FLOOR_OFFSET - PLAYER_SIZE / 2));
-	var isGameOver = false;
-	var tickOffset = 0;
-	var interface = new Interface(self);
+	var interface = new Interface(LK.gui.topCenter);
 	;
 	stage.on('down', function (obj) {
 		var event = obj.event;
 		lastTouchX = event.global.x;
@@ -345,23 +363,30 @@
 			}
 		}
 	});
 	LK.on('tick', function () {
-		if (isGameOver) {}
-		player.update({
-			columns
-		});
-		columns.forEach(function (column) {
-			column.update(boxes, tickOffset);
-		});
-		for (var i = boxes.length - 1; i >= 0; i--) {
-			var box = boxes[i];
-			if (box.update({
-				interface,
-				player
-			})) {
+		var playerArgs = {
+			interface,
+			columnList
+		};
+		player.update(playerArgs);
+		;
+		var columnArgs = {
+			boxList
+		};
+		for (var i = columnList.length - 1; i >= 0; i--) {
+			columnList[i].update(columnArgs);
+		}
+		;
+		var boxArgs = {
+			interface,
+			player
+		};
+		for (var i = boxList.length - 1; i >= 0; i--) {
+			var box = boxList[i];
+			if (box.update(boxArgs)) {
 				box.destroy();
-				boxes.splice(i, 1);
+				boxList.splice(i, 1);
 			}
 		}
 	});
 });