diff --git a/sources/js/index.js b/sources/js/index.js
index 276224b..556d520 100644
--- a/sources/js/index.js
+++ b/sources/js/index.js
@@ -21,7 +21,11 @@ let gameOverModal;
 
 
 audio.loop = true;
+audio.volume = "1";
 startSound.volume = "0.2";
+eatSound.volume = "0.2";
+dieSound.volume = "0.2";
+gameOverSound.volume = "0.2";
 
 req.open("GET", "sources/levels.json");
 req.onerror = () => console.error("Fail to load XML request");
diff --git a/sources/levels.json b/sources/levels.json
index 31bf356..af6a60e 100644
--- a/sources/levels.json
+++ b/sources/levels.json
@@ -1,5 +1,5 @@
 {
   "Level 1": {
-    "snakeSpeed": 500
+    "snakeSpeed": 100
   }
 }
diff --git a/sources/sound/onGameOver.mp3 b/sources/sound/onGameOver.mp3
index 3b15a5c..f6ea119 100644
Binary files a/sources/sound/onGameOver.mp3 and b/sources/sound/onGameOver.mp3 differ