diff --git a/Assets/Scripts/AsteroidSpawner.cs b/Assets/Scripts/AsteroidSpawner.cs
index cb84664..3812775 100644
--- a/Assets/Scripts/AsteroidSpawner.cs
+++ b/Assets/Scripts/AsteroidSpawner.cs
@@ -43,25 +43,37 @@ public class AsteroidSpawner : TimerFunctionsClass
 
     public void SpawnAsteroidEvent()
     {
+
+
+        var planet = FindObjectOfType<PlanetManager>();
+
         if (!GenerationVersLesjoueurs)
         {
             // Random entre 10 et 20, * 1 ou -1
-            var x = UnityEngine.Random.Range(30.0f, 40.0f)*(Mathf.Floor(UnityEngine.Random.Range(0.0f, 1.99f))*2 - 1);
-            var y = UnityEngine.Random.Range(20.0f, 30.0f)*(Mathf.Floor(UnityEngine.Random.Range(0.0f, 1.99f))*2 - 1);
+            //var x = UnityEngine.Random.Range(30.0f, 40.0f)*(Mathf.Floor(UnityEngine.Random.Range(0.0f, 1.99f))*2 - 1);
+            //var y = UnityEngine.Random.Range(20.0f, 30.0f)*(Mathf.Floor(UnityEngine.Random.Range(0.0f, 1.99f))*2 - 1);
+
+
+            var angleRandom = UnityEngine.Random.Range(0, 359.9f);
 
 
             //0-3
             var AsteroidType = Mathf.RoundToInt(Mathf.Floor(UnityEngine.Random.Range(0f, 3.999f)));
 
             //instantiate as child of AsteroidSpawner
-            var a = Instantiate(AsteroidPrefabTypes[AsteroidType], new Vector3(x, y, 0.0f), Quaternion.identity);
+            //var a = Instantiate(AsteroidPrefabTypes[AsteroidType], new Vector3(x, y, 0.0f), Quaternion.identity);
+
+            Instantiate(AsteroidPrefabTypes[AsteroidType],
+                             planet.GetPlanetCoordinatesFromPlayerXY(angleRandom, UnityEngine.Random.Range(15f, 25f)),
+                              Quaternion.identity);
+
             //a.tranform.parent = this.transform;
 
         }
         else
         {
             var players =  GameObject.FindGameObjectsWithTag("Player");
-            var planet = FindObjectOfType<PlanetManager>();
+            
             foreach (var p in players)
             {
 
diff --git a/Assets/Scripts/Earthquake.cs b/Assets/Scripts/Earthquake.cs
index 1fe03f4..b07acc3 100644
--- a/Assets/Scripts/Earthquake.cs
+++ b/Assets/Scripts/Earthquake.cs
@@ -28,7 +28,7 @@ public class Earthquake : MonoBehaviour {
     // Update is called once per frame
     public void Update () {
 
-		if(!isExploding) return;
+		if(isExploding) return;
 
 		float disbalance = pmgr.GetDisbalance();
 		float val = Mathf.Clamp((disbalance-CriticalMin) / (CriticalMax-CriticalMin),0,1);
@@ -38,7 +38,7 @@ public class Earthquake : MonoBehaviour {
 
 		core.color = new Color(1f, 1f - val, 1f - val);
 
-		if (val2 >= 1f)
+		if (val2 >= CriticalMax + 0.05f)
 		{
 			EarthquakeBoom();
 		}
@@ -57,7 +57,13 @@ public class Earthquake : MonoBehaviour {
 	{
 		isExploding = true;
 		StartCoroutine(Explode());
-		Instantiate(ExplosionParticle);
+		Instantiate(ExplosionParticle);
+	    var camera = GameObject.Find("Main Camera");
+	    if (camera)
+	    {
+	        var shaker = camera.GetComponent<CameraShake>();
+	        if (shaker) shaker.shakeTimeAmount = 2.0f;
+	    }
 	}
 
 	IEnumerator Explode()
diff --git a/Assets/Scripts/PlanetManager.cs b/Assets/Scripts/PlanetManager.cs
index 5641ef3..0b4a2b9 100644
--- a/Assets/Scripts/PlanetManager.cs
+++ b/Assets/Scripts/PlanetManager.cs
@@ -7,6 +7,7 @@ public class PlanetManager : MonoBehaviour
 {
 	public float PlayerAngle;
 	public float PlayerOffset;
+    public  int _NbActivePlayersRemaining = 0;
     public int NbCartiers = 10;
     public float TailleCartiersEnDegres = 0;  //radian -> valeurs 0 a 360
     public float CartierResetRatioSpeedFactor = 0.23f;   //Entre 0.05 et 1 ou plus   on aime que ca restore lentement, randomnly
@@ -115,7 +116,31 @@ public class PlanetManager : MonoBehaviour
 
             w.sprite.transform.localScale = new Vector3(w.offset, w.offset,1.0f);
         }
-		//TODO_SR For each player
+        //TODO_SR For each player
+        VerifierPlayersActif();
+
+        if (_NbActivePlayersRemaining <= 1)
+        {
+            //TODO  Call WorldManger.EndGame ou whatever
+        }
+
+    }
+
+    private void VerifierPlayersActif()
+    {
+        
+        int nbJoueursTrouves = 0;
+        var players = GameObject.FindGameObjectsWithTag("Player");
+        
+        foreach (var p in players)
+        {
+            if (p.GetComponent<Astronaut>().State < Astronaut.AstronautState.Ejecting)
+            {
+                nbJoueursTrouves++;
+            }
+        }
+        
+        _NbActivePlayersRemaining = nbJoueursTrouves;
     }
 
     public void PushWedge(float thetaPlayerX)
diff --git a/Assets/Scripts/WorldManager.cs b/Assets/Scripts/WorldManager.cs
new file mode 100644
index 0000000..ba1ecdc
--- /dev/null
+++ b/Assets/Scripts/WorldManager.cs
@@ -0,0 +1,25 @@
+using UnityEngine;
+using System.Collections;
+
+public class WorldManager : MonoBehaviour {
+
+    private static WorldManager instance = null; 
+    private WorldManager(){}             
+
+	// Use this for initialization
+	public void Awake () {
+        if (!instance)
+        {
+            instance = new WorldManager();
+        }
+	}
+
+    public WorldManager getInstance() {
+        return instance;
+    }
+	
+	// Update is called once per frame
+	void Update () {
+	
+	}
+}
diff --git a/Assets/Scripts/WorldManager.cs.meta b/Assets/Scripts/WorldManager.cs.meta
new file mode 100644
index 0000000..81bb7ca
--- /dev/null
+++ b/Assets/Scripts/WorldManager.cs.meta
@@ -0,0 +1,12 @@
+fileFormatVersion: 2
+guid: 3eaea4cf17643ba42939e209672bc39e
+timeCreated: 1460233556
+licenseType: Free
+MonoImporter:
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/_Scenes/Main.unity b/Assets/_Scenes/Main.unity
index bd2a63b..9472641 100644
--- a/Assets/_Scenes/Main.unity
+++ b/Assets/_Scenes/Main.unity
@@ -1103,6 +1103,6 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 015d8005b8f2f454da584e55b55711f5, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
-  shakeTimeAmount: 2
+  shakeTimeAmount: 0
   shakeAmount: 0.6
   decreaseFactor: 1