diff --git a/src/game/typing/practice/stage_timer.js b/src/game/typing/practice/stage_timer.js
deleted file mode 100644
index 7a2fb7e..0000000
--- a/src/game/typing/practice/stage_timer.js
+++ /dev/null
@@ -1,69 +0,0 @@
-function StageTimer(stageTimerSec, onTimeOver) {
-	this.stageTimerSec = stageTimerSec;
-	this.onTimeOver = onTimeOver;
-
-	var fontStyle = StageTimer.DEFAULT_TEXT_FONT;
-
-	fontStyle.align = "right";
-	fontStyle.boundsAlignH = "right";
-	this.timerText = game.add.text(game.world.width - 300, 0, "", fontStyle)
-		.setTextBounds(0, 0, 200, StageTimer.FONT_HEIGHT_PX);
-
-	// var grd = this.label.context.createLinearGradient(0, 0, 0, StageTimer.FONT_HEIGHT_PX);
-	// grd.addColorStop(0, '#8ED6FF');
-	// grd.addColorStop(1, '#004CB3');
-	// this.label.fill = grd;
-	// this.scoreText.fill = grd;
-
-	// this.setShadow(3, 3, 'rgba(0, 0, 0, 0.5)', 2);
-	// this.label.stroke = '#000';
-	// this.label.strokeThickness = 3;
-
-	this.timerEvent = null;
-};
-
-StageTimer.prototype.start = function() {
-	this.timeLeft = this.stageTimerSec;
-	this.printTime();
-	if(this.timerEvent === null)
-		this.timerEvent = game.time.events.loop(Phaser.Timer.SECOND, this.updateTimer, this);
-}
-
-StageTimer.prototype.pause = function() {
-}
-
-StageTimer.prototype.stop = function() {
-	if(this.timerEvent)
-		this.removeTimer();
-	this.timerText.text = "시간 끝";
-}
-
-StageTimer.prototype.updateTimer = function() {
-	this.timeLeft--;
-	if(this.timeLeft === 0) {
-		this.stop();
-		this.onTimeOver();
-	} else {
-		this.printTime();
-	}
-}
-
-StageTimer.prototype.printTime = function() {
-	this.timerText.text = this.timeLeft.toString() + "초";
-}
-
-StageTimer.prototype.removeTimer = function() {
-	game.time.events.remove(this.timerEvent);
-	this.timerEvent = null;
-}
-
-
-StageTimer.FONT_HEIGHT_PX		= 70;
-
-StageTimer.DEFAULT_TEXT_FONT	= {
-	font: "38px Arial",
-	align: "center",
-	boundsAlignH: "center",		// left, center. right
-	boundsAlignV: "middle", 	// top, middle, bottom
-	fill: "#fff"
-};
\ No newline at end of file
diff --git a/src/game/typing/whac_a_mole/stage_timer.js b/src/game/typing/whac_a_mole/stage_timer.js
deleted file mode 100644
index 7a2fb7e..0000000
--- a/src/game/typing/whac_a_mole/stage_timer.js
+++ /dev/null
@@ -1,69 +0,0 @@
-function StageTimer(stageTimerSec, onTimeOver) {
-	this.stageTimerSec = stageTimerSec;
-	this.onTimeOver = onTimeOver;
-
-	var fontStyle = StageTimer.DEFAULT_TEXT_FONT;
-
-	fontStyle.align = "right";
-	fontStyle.boundsAlignH = "right";
-	this.timerText = game.add.text(game.world.width - 300, 0, "", fontStyle)
-		.setTextBounds(0, 0, 200, StageTimer.FONT_HEIGHT_PX);
-
-	// var grd = this.label.context.createLinearGradient(0, 0, 0, StageTimer.FONT_HEIGHT_PX);
-	// grd.addColorStop(0, '#8ED6FF');
-	// grd.addColorStop(1, '#004CB3');
-	// this.label.fill = grd;
-	// this.scoreText.fill = grd;
-
-	// this.setShadow(3, 3, 'rgba(0, 0, 0, 0.5)', 2);
-	// this.label.stroke = '#000';
-	// this.label.strokeThickness = 3;
-
-	this.timerEvent = null;
-};
-
-StageTimer.prototype.start = function() {
-	this.timeLeft = this.stageTimerSec;
-	this.printTime();
-	if(this.timerEvent === null)
-		this.timerEvent = game.time.events.loop(Phaser.Timer.SECOND, this.updateTimer, this);
-}
-
-StageTimer.prototype.pause = function() {
-}
-
-StageTimer.prototype.stop = function() {
-	if(this.timerEvent)
-		this.removeTimer();
-	this.timerText.text = "시간 끝";
-}
-
-StageTimer.prototype.updateTimer = function() {
-	this.timeLeft--;
-	if(this.timeLeft === 0) {
-		this.stop();
-		this.onTimeOver();
-	} else {
-		this.printTime();
-	}
-}
-
-StageTimer.prototype.printTime = function() {
-	this.timerText.text = this.timeLeft.toString() + "초";
-}
-
-StageTimer.prototype.removeTimer = function() {
-	game.time.events.remove(this.timerEvent);
-	this.timerEvent = null;
-}
-
-
-StageTimer.FONT_HEIGHT_PX		= 70;
-
-StageTimer.DEFAULT_TEXT_FONT	= {
-	font: "38px Arial",
-	align: "center",
-	boundsAlignH: "center",		// left, center. right
-	boundsAlignV: "middle", 	// top, middle, bottom
-	fill: "#fff"
-};
\ No newline at end of file
diff --git a/src/web/client/typing_practice.html b/src/web/client/typing_practice.html
index e1f4f30..d7bec48 100644
--- a/src/web/client/typing_practice.html
+++ b/src/web/client/typing_practice.html
@@ -31,6 +31,7 @@
 		<script src="../../game/lib/game_over_text.js"></script>
 		<script src="../../game/lib/animal.js"></script>
 		<script src="../../game/lib/animal_list.js"></script>
+		<script src="../../game/lib/stage_timer.js"></script>
 
 		<!-- Test typing : source files -->
 		<script src="../../game/typing/alphabet_list/korean_basic.js"></script>
@@ -63,7 +64,6 @@
 		<script src="../../game/typing/lib/keyboard.js"></script>
 
 		<script src="../../game/typing/practice/define_variables.js"></script>
-		<script src="../../game/typing/practice/stage_timer.js"></script>
 		<script src="../../game/typing/practice/typing_score.js"></script>
 		<script src="../../game/typing/practice/loading.js"></script>
 		<script src="../../game/typing/practice/game.js"></script>
diff --git a/src/web/client/whac_a_mole.html b/src/web/client/whac_a_mole.html
index 6246d5b..39c0ef3 100644
--- a/src/web/client/whac_a_mole.html
+++ b/src/web/client/whac_a_mole.html
@@ -33,6 +33,7 @@
 		<script src="../../game/lib/experience_app_timer.js"></script>
 		<script src="../../game/lib/game_over_text.js"></script>
 		<script src="../../game/lib/animal.js"></script>
+		<script src="../../game/lib/stage_timer.js"></script>
 
 		<!-- Test typing : source files -->
 		<script src="../../game/typing/alphabet_list/korean_basic_left.js"></script>
@@ -66,7 +67,6 @@
 		<script src="../../game/typing/lib/keyboard.js"></script>
 
 		<script src="../../game/typing/whac_a_mole/define_variables.js"></script>
-		<script src="../../game/typing/whac_a_mole/stage_timer.js"></script>
 		<!-- <script src="../../game/typing/whac_a_mole/typing_score.js"></script> -->
 		<script src="../../game/typing/whac_a_mole/helmet.js"></script>
 		<script src="../../game/typing/whac_a_mole/mole.js"></script>