diff --git a/Assets/Resources/Levels/BackOnTrack.json b/Assets/Resources/Levels/BackOnTrack.json
index 89275bf..45576ea 100644
--- a/Assets/Resources/Levels/BackOnTrack.json
+++ b/Assets/Resources/Levels/BackOnTrack.json
@@ -4,6 +4,7 @@
   "totalJumps": 0,
   "totalAttempts": 0,
   "killedCount": 0,
+  "order": 2,
   "elements": [
     {
       "type": "Spike",
diff --git a/Assets/Resources/Levels/StereoMadness.json b/Assets/Resources/Levels/StereoMadness.json
new file mode 100644
index 0000000..37ce183
--- /dev/null
+++ b/Assets/Resources/Levels/StereoMadness.json
@@ -0,0 +1,17 @@
+{
+  "name": "Stereo Madness",
+  "musicName": "StereoMadness",
+  "totalJumps": 0,
+  "totalAttempts": 0,
+  "killedCount": 0,
+  "order": 1,
+  "elements": [
+    {
+      "type": "Spike",
+      "position": {
+        "x": 0,
+        "y": 0
+      }
+    }
+  ]
+}
diff --git a/Assets/Resources/Levels/StereoMadness.json.meta b/Assets/Resources/Levels/StereoMadness.json.meta
new file mode 100644
index 0000000..8a5f689
--- /dev/null
+++ b/Assets/Resources/Levels/StereoMadness.json.meta
@@ -0,0 +1,7 @@
+fileFormatVersion: 2
+guid: b865ad45000d21465bdcfbbca0225616
+TextScriptImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Scripts/Level.cs b/Assets/Scripts/Level.cs
index b9b93b1..87f6ff0 100644
--- a/Assets/Scripts/Level.cs
+++ b/Assets/Scripts/Level.cs
@@ -8,6 +8,7 @@ public class Level
     public int totalJumps;
     public int totalAttempts;
     public int killedCount;
+    public int order;
 
     public static Level CreateFromJSON(string jsonString)
     {
diff --git a/Assets/Scripts/LevelsLoader.cs b/Assets/Scripts/LevelsLoader.cs
index 297609f..040c9ea 100644
--- a/Assets/Scripts/LevelsLoader.cs
+++ b/Assets/Scripts/LevelsLoader.cs
@@ -1,15 +1,38 @@
-using System.IO;
+using System.Collections.Generic;
 using UnityEngine;
 
 public class LevelsLoader : MonoBehaviour
 {
-    public Level level;
+    public List<Level> levels = new();
+    public Level levelCurrent;
 
-    public void Start()
+    private void Start()
     {
         DontDestroyOnLoad(gameObject);
+        LoadAllLevels();
+        levelCurrent = levels[0];
+    }
 
-        TextAsset jsonTextFile = Resources.Load<TextAsset>(Path.Combine("Levels", "BackOnTrack"));
-        level = JsonUtility.FromJson<Level>(jsonTextFile.text);
+    private void LoadAllLevels()
+    {
+        TextAsset[] levelFiles = Resources.LoadAll<TextAsset>("Levels");
+        foreach (TextAsset jsonTextFile in levelFiles)
+        {
+            Level loadedLevel = JsonUtility.FromJson<Level>(jsonTextFile.text);
+            levels.Add(loadedLevel);
+        }
+        levels.Sort((x, y) => x.order.CompareTo(y.order));
+    }
+
+    public void NextLevel()
+    {
+        int currentIndex = levels.IndexOf(levelCurrent);
+        levelCurrent = levels[(currentIndex + 1) % levels.Count];
+    }
+
+    public void PreviousLevel()
+    {
+        int currentIndex = levels.IndexOf(levelCurrent);
+        levelCurrent = levels[(currentIndex - 1 + levels.Count) % levels.Count];
     }
 }
diff --git a/Assets/Scripts/LevelsSelect/LevelNameText.cs b/Assets/Scripts/LevelsSelect/LevelNameText.cs
index 60fa19e..97c36d1 100644
--- a/Assets/Scripts/LevelsSelect/LevelNameText.cs
+++ b/Assets/Scripts/LevelsSelect/LevelNameText.cs
@@ -1,15 +1,19 @@
 using UnityEngine;
 using UnityEngine.UI;
-using UnityEngine.SceneManagement;
 
 public class LevelNameText : MonoBehaviour
 {
-    public LevelsLoader levelsLoader;
     public Text levelNameText;
+    public LevelsLoader levelsLoader;
 
     public void Start()
     {
         levelsLoader = GameObject.FindGameObjectWithTag("LevelsLoader").GetComponent<LevelsLoader>();
-        levelNameText.text = levelsLoader.level.name;
+        levelNameText.text = levelsLoader.levelCurrent.name;
+    }
+
+    public void Update()
+    {
+        levelNameText.text = levelsLoader.levelCurrent.name;
     }
 }
diff --git a/Assets/Scripts/LevelsSelect/LevelNextButton.cs b/Assets/Scripts/LevelsSelect/LevelNextButton.cs
index bbc4ebd..6bc51ab 100644
--- a/Assets/Scripts/LevelsSelect/LevelNextButton.cs
+++ b/Assets/Scripts/LevelsSelect/LevelNextButton.cs
@@ -2,8 +2,15 @@ using UnityEngine;
 
 public class LevelNextButton : MonoBehaviour
 {
+    public LevelsLoader levelsLoader;
+
+    public void Start()
+    {
+        levelsLoader = GameObject.FindGameObjectWithTag("LevelsLoader").GetComponent<LevelsLoader>();
+    }
+
     public void NextLevel()
     {
-        // TODO
+        levelsLoader.NextLevel();
     }
 }
diff --git a/Assets/Scripts/LevelsSelect/LevelPreviousButton.cs b/Assets/Scripts/LevelsSelect/LevelPreviousButton.cs
index f480ab2..66fa47c 100644
--- a/Assets/Scripts/LevelsSelect/LevelPreviousButton.cs
+++ b/Assets/Scripts/LevelsSelect/LevelPreviousButton.cs
@@ -2,8 +2,15 @@ using UnityEngine;
 
 public class LevelPreviousButton : MonoBehaviour
 {
+    public LevelsLoader levelsLoader;
+
+    public void Start()
+    {
+        levelsLoader = GameObject.FindGameObjectWithTag("LevelsLoader").GetComponent<LevelsLoader>();
+    }
+
     public void PreviousLevel()
     {
-        // TODO
+        levelsLoader.PreviousLevel();
     }
 }
diff --git a/Assets/Scripts/Player.cs b/Assets/Scripts/Player.cs
index 846b4ce..1860a4e 100644
--- a/Assets/Scripts/Player.cs
+++ b/Assets/Scripts/Player.cs
@@ -19,7 +19,7 @@ public class Player : MonoBehaviour
     {
         levelsLoader = GameObject.FindGameObjectWithTag("LevelsLoader").GetComponent<LevelsLoader>();
 
-        audioSource.clip = Resources.Load<AudioClip>(Path.Combine("Musics", levelsLoader.level.musicName));
+        audioSource.clip = Resources.Load<AudioClip>(Path.Combine("Musics", levelsLoader.levelCurrent.musicName));
         audioSource.Play();
 
         var mainModule = particle.main;