diff --git a/Assets/Scripts/GameSystems.meta b/Assets/Scripts/GameSystems.meta
new file mode 100644
index 0000000..91dfe8a
--- /dev/null
+++ b/Assets/Scripts/GameSystems.meta
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: f936e977ecaeacc44818a09cfebd7de1
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Scripts/GameSystems/ClientManager.cs b/Assets/Scripts/GameSystems/ClientManager.cs
new file mode 100644
index 0000000..b237a8d
--- /dev/null
+++ b/Assets/Scripts/GameSystems/ClientManager.cs
@@ -0,0 +1,86 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEditor;
+
+//Define the system managing the clients. (Singleton)
+public sealed class ClientManager : MonoBehaviour
+{
+    int currentNbClient = 0;
+    int nbMaxClients = 1;
+    bool clientSpawnReady = false;
+    float clientSpawnTimer = 2.0f; //Intial time before first spawn (pseudo-random after that)
+    float maxTimeNewClients = 10.0f;
+
+    string ClientRessourceFolder = "Clients";
+    Vector3 spawnPosition = new Vector3(0, 0, 0);
+    private Object[] clients;
+
+    //Request new client
+    //Return wether a new client was created
+    public bool clientRequest()
+    {
+        if(clientSpawnReady && currentNbClient<nbMaxClients)
+        {
+            GameObject newClient = (GameObject)clients[Random.Range(0, clients.Length)];
+            // Debug.Log("Spawning "+clientPrefab.name+" at "+spawnPosition);
+            Instantiate(newClient, spawnPosition, Quaternion.identity);
+            currentNbClient+=1;
+            clientSpawnTimer=Random.Range(1.0f, maxTimeNewClients); //Need more random ?
+            clientSpawnReady=false;
+
+            return true; //New client instantiated
+        }
+        return false; //No new client
+    }
+
+    // Start is called before the first frame update
+    void Start()
+    {
+        // Find all assets labelled with 'usable' :
+        // string[] guids = AssetDatabase.FindAssets("", new string[] {"Assets/Prefabs/Characters/Clients"});
+
+        // foreach (string guid in guids)
+        // {
+        //     Debug.Log(AssetDatabase.GUIDToAssetPath(guid));
+        //     Instantiate(guid, spawnPosition, Quaternion.identity);
+        // }
+
+        clients = Resources.LoadAll(ClientRessourceFolder);
+
+        foreach (var c in clients)
+        {
+            Debug.Log(gameObject.name+" : "+c.name + " loaded");
+        }
+    }
+
+    // Update is called once per frame
+    void Update()
+    {
+        if(!clientSpawnReady)
+        {
+            clientSpawnTimer-= Time.deltaTime;
+            if(clientSpawnTimer<=0)
+                clientSpawnReady=true;
+        }
+    }
+
+    //// Singleton Implementation (https://jlambert.developpez.com/tutoriels/dotnet/implementation-pattern-singleton-csharp/#LIII) ////
+    private ClientManager()
+    {
+    }
+
+    public static ClientManager Instance { get { return Nested.instance; } }
+        
+    private class Nested
+    {
+        // Explicit static constructor to tell C# compiler
+        // not to mark type as beforefieldinit
+        static Nested()
+        {
+        }
+
+        internal static readonly ClientManager instance = new GameObject("ClientManager").AddComponent<ClientManager>();
+    }
+    ////
+}
diff --git a/Assets/Scripts/GameSystems/ClientManager.cs.meta b/Assets/Scripts/GameSystems/ClientManager.cs.meta
new file mode 100644
index 0000000..ebfa94a
--- /dev/null
+++ b/Assets/Scripts/GameSystems/ClientManager.cs.meta
@@ -0,0 +1,13 @@
+fileFormatVersion: 2
+guid: 2bc1593400bcb054db0179d45fa332e9
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences:
+  - clientPrefab: {fileID: 5304524770463492230, guid: 2dde00c8c5857d2438fd92435d8c3abb,
+      type: 3}
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Scripts/GameSystem.cs b/Assets/Scripts/GameSystems/GameSystem.cs
similarity index 96%
rename from Assets/Scripts/GameSystem.cs
rename to Assets/Scripts/GameSystems/GameSystem.cs
index a3fe004..5449da8 100644
--- a/Assets/Scripts/GameSystem.cs
+++ b/Assets/Scripts/GameSystems/GameSystem.cs
@@ -4,7 +4,6 @@ using UnityEngine;
 using System; //Exceptions
 
 //Define the global game system of the service. (Singleton)
-//TODO : Split gamesystem into subsystem ?
 public sealed class GameSystem : MonoBehaviour
 {
     //Time
@@ -14,10 +13,6 @@ public sealed class GameSystem : MonoBehaviour
     float slowScale = 0.5f; //Default scale for slow mode
     private float fixedDeltaTime;
 
-    //Clients
-    // int nbMaxClients = 2;
-    // float freqNewClients = 3.0f;
-
     public void startService()
     {
         serviceTimer=serviceTime;
@@ -75,6 +70,8 @@ public sealed class GameSystem : MonoBehaviour
             serviceTimer-= Time.deltaTime;
             if (serviceTimer < 0)
                 serviceOpen = false;
+
+            ClientManager.Instance.clientRequest();
         }
 
         //Temporary manual slowmode toggle
diff --git a/Assets/Scripts/GameSystem.cs.meta b/Assets/Scripts/GameSystems/GameSystem.cs.meta
similarity index 100%
rename from Assets/Scripts/GameSystem.cs.meta
rename to Assets/Scripts/GameSystems/GameSystem.cs.meta