diff --git a/resources/image/ui/heart_full.png b/resources/image/ui/heart_full.png
index 469b13a..347ac9c 100644
Binary files a/resources/image/ui/heart_full.png and b/resources/image/ui/heart_full.png differ
diff --git a/src/game/lib/announce_box.js b/src/game/lib/announce_box.js
index 5b40245..9b68341 100644
--- a/src/game/lib/announce_box.js
+++ b/src/game/lib/announce_box.js
@@ -4,10 +4,8 @@
 class AnnounceBox {
 
 	constructor(x, y) {
-		console.log("x : " + x + ", y : " + y);
 		this.posX = x;
 		this.posY = y;
-
 	}
 
 	drawText(posX, posY, text) {
diff --git a/src/game/lib/heart_gauge.js b/src/game/lib/heart_gauge.js
index 5238eab..0a8b560 100644
--- a/src/game/lib/heart_gauge.js
+++ b/src/game/lib/heart_gauge.js
@@ -12,12 +12,12 @@ class HeartGauge {
 			() => { this.onChangeMaxCountListener(); }
 		);
 
-		let startPosX = 950;
+		let startPosX = GAME_SCREEN_SIZE.x - HeartGauge.GAP * 4;
 		let posY = 30;
 		for(let i = 0; i < HeartManager.HEART_MAX_COUNT; i++) {
-			let heart = game.add.sprite(startPosX - i * 30, posY, "heart_full");
+			let heart = game.add.sprite(startPosX - i * HeartGauge.GAP, posY, "heart_full");
 			heart.anchor.set(0.5);
-			heart.scale.set(1);
+			heart.scale.set(HeartGauge.HEART_SCALE);
 			heart.alpha = 0;
 			this.hearts.push(heart);
 		}
@@ -45,4 +45,7 @@ class HeartGauge {
 			this.hearts[i].alpha = 1;
 		}
 	}
-}
\ No newline at end of file
+}
+
+HeartGauge.GAP				= 35;
+HeartGauge.HEART_SCALE		= 0.6;
\ No newline at end of file
diff --git a/src/game/mouse/space_invaders/alien.js b/src/game/mouse/space_invaders/alien.js
index edd27d5..bf65f96 100644
--- a/src/game/mouse/space_invaders/alien.js
+++ b/src/game/mouse/space_invaders/alien.js
@@ -49,7 +49,6 @@ class Alien extends Phaser.Sprite {
 			return;
 
 		if(this.isOnWaitingRoom) {
-			this.isOnWaitingRoom = false;
 			this.goOnstage();
 			return;
 		} else {
@@ -96,6 +95,7 @@ class Alien extends Phaser.Sprite {
 	}
 
 	goOnstage() {
+		this.isOnWaitingRoom = false;
 		this.goRandomPosition();
 
 		if(typeof this.onGoOnstageFunction !== "undefined")
diff --git a/src/game/mouse/space_invaders/alien_timer.js b/src/game/mouse/space_invaders/alien_timer.js
index 26efee2..a7a3347 100644
--- a/src/game/mouse/space_invaders/alien_timer.js
+++ b/src/game/mouse/space_invaders/alien_timer.js
@@ -96,4 +96,4 @@ AlienTimer.DEFAULT_TEXT_FONT		= {
 };
 
 AlienTimer.DEFAULT_TIME_GAP_SEC		= 10;
-AlienTimer.MOVE_UP_AMOUNT_PX		= 60;
\ No newline at end of file
+AlienTimer.MOVE_UP_AMOUNT_PX		= 48;
\ No newline at end of file
diff --git a/src/game/mouse/space_invaders/game.js b/src/game/mouse/space_invaders/game.js
index ffcd8fe..65ed36c 100644
--- a/src/game/mouse/space_invaders/game.js
+++ b/src/game/mouse/space_invaders/game.js
@@ -4,7 +4,7 @@
 class Game {
 
 	create() {
-		this.game.stage.backgroundColor = '#4d4d4d';
+		this.game.stage.backgroundColor = "#000000";	// '#4d4d4d';
 
 		sessionStorageManager.isNewBestRecrd = false;
 
@@ -47,7 +47,7 @@ class Game {
 
 		// waiting room
 		this.game.add.graphics()
-			.beginFill(0xffffff, 0.1)
+			.beginFill(0xffffff, 0.3)
 			.drawRect(0, 100, game.world.width, 100);