diff --git a/Plugin.cs b/Plugin.cs
index a87edf46..246da255 100644
--- a/Plugin.cs
+++ b/Plugin.cs
@@ -71,6 +71,7 @@ public void Init()
         // initialize world components
         World.World.Load(); // C# sucks
         Movement.Load();
+        CyberGrind.Load();
 
         // initialize ui components
         WidescreenFix.Load();
diff --git a/content/PacketType.cs b/content/PacketType.cs
index 63d7b9c3..f6b604a6 100644
--- a/content/PacketType.cs
+++ b/content/PacketType.cs
@@ -33,5 +33,7 @@ public enum PacketType
     /// <summary> Need to activate a certain object. It can be anything, because there are a lot of different stuff in the game. </summary>
     ActivateObject,
     /// <summary> Any action with the cinema, like starting a video, pausing or rewinding. </summary>
-    CinemaAction
+    CinemaAction,
+    /// <summary> Any action with CyberGrind, like pattern and wave. </summary>
+    CybergrindAction
 }
\ No newline at end of file
diff --git a/harmony-patches/CyberGrindPatch.cs b/harmony-patches/CyberGrindPatch.cs
new file mode 100644
index 00000000..87cefd70
--- /dev/null
+++ b/harmony-patches/CyberGrindPatch.cs
@@ -0,0 +1,114 @@
+namespace Jaket.HarmonyPatches;
+
+using HarmonyLib;
+using UnityEngine;
+using UnityEngine.UI;
+
+using Jaket.Net;
+using Jaket.World;
+
+#pragma warning disable IDE0051 // Remove unused private members
+#pragma warning disable RCS1213 // Remove unused member declaration.
+
+[HarmonyPatch(typeof(EndlessGrid), "LoadPattern")]
+public class EndlessGridLoadPatternPatch
+{
+    static void Prefix(ref ArenaPattern pattern)
+    {
+        // load current pattern in client
+        if (LobbyController.Lobby != null)
+        {
+            // send pattern if the player is the owner of the lobby
+            if (LobbyController.IsOwner) CyberGrind.Instance.SendPattern(pattern);
+            // replacing client pattern with server pattern on client
+            else pattern = CyberGrind.Instance.CurrentPattern;
+        }
+    }
+}
+
+[HarmonyPatch(typeof(EndlessGrid), "Start")]
+public class EndlessGridStartPatch
+{
+    static bool Prefix()
+    {
+        // getting cybergrind grid deathzone to change it later
+        foreach (var deathZone in Resources.FindObjectsOfTypeAll<DeathZone>()) if (deathZone.name == "Cube") CyberGrind.Instance.GridDeathZoneInstance = deathZone;
+
+        // don't skip original method
+        return true;
+    }
+
+    // use postfix to wait object to initialize
+    static void Postfix()
+    {
+        var cg = CyberGrind.Instance;
+        // check when the player in a lobby 
+        if (LobbyController.Lobby != null || LobbyController.IsOwner)
+        {
+            // sets as first time
+            cg.LoadTimes = 0;
+            // check if current pattern is loaded and the player is the client
+            if (cg.CurrentPattern != null && !LobbyController.IsOwner)
+                // loads current pattern from the server
+                cg.LoadCurrentPattern();
+            // send empty pattern when game starts and the player is the owner to prevent load previous cybergrind pattern
+            else cg.SendPattern(new ArenaPattern());
+        }
+        else
+        {
+            // resetting values if the player is not in a lobby.
+            cg.LoadTimes = 0;
+            cg.CurrentWave = 0;
+            cg.CurrentPattern = null;
+        }
+    }
+}
+
+[HarmonyPatch(typeof(EndlessGrid), "OnTriggerEnter")]
+public class EndlessGridOnTriggerEnterPatch
+{
+    // dont allow to launch CyberGrind to client
+    static bool Prefix(ref Text ___waveNumberText)
+    {
+        // for some reason, the wave number text is not shown on the client
+        ___waveNumberText.transform.parent.parent.gameObject.SetActive(value: true);
+        // don't activate trigger if the player is not the owner of the lobby
+        if (LobbyController.Lobby != null && !LobbyController.IsOwner) return false;
+        return true;
+    }
+}
+
+[HarmonyPatch(typeof(EndlessGrid), "Update")]
+public class EndlessGridUpdatePatch
+{
+    static bool Prefix(ref ActivateNextWave ___anw, EndlessGrid __instance)
+    {
+        // check if the player is not the owner of the lobby (client)
+        if (LobbyController.Lobby != null && !LobbyController.IsOwner)
+        {
+            // set the current wave on the client to original cybergrind singleton to sync with the server
+            __instance.currentWave = CyberGrind.Instance.CurrentWave;
+            // set death enemies to prevent start new wave on the client to sync it
+            ___anw.deadEnemies = -999;
+        }
+        return true;
+    }
+
+    // use postfix to change object after original object is changed
+    static void Postfix(ref Text ___enemiesLeftText)
+    {
+        // check if the player is not the owner of the lobby (client)
+        if (LobbyController.Lobby != null && !LobbyController.IsOwner)
+        {
+            // we broke original death enemies count, so we need to create new counter based on EnemyTracker
+            var enemies = EnemyTracker.Instance.enemies;
+            // remove dead enemies or null enemies from the list
+            enemies.RemoveAll(e => e.dead || e is null);
+            // set enemies left text on the client, replacing original
+            ___enemiesLeftText.text = EnemyTracker.Instance.enemies.Count.ToString();
+        }
+        // change y position of cybergrind grid deathzone when lobby created or not to prevent enemies randomly dying
+        var dz = CyberGrind.Instance.GridDeathZoneInstance;
+        if (dz != null) dz.transform.position = dz.transform.position with { y = LobbyController.Lobby != null ? -10 : 0.5f };
+    }
+}
\ No newline at end of file
diff --git a/net/end-points/Client.cs b/net/end-points/Client.cs
index 2b4e94d7..9c7e071b 100644
--- a/net/end-points/Client.cs
+++ b/net/end-points/Client.cs
@@ -86,6 +86,8 @@ public override void Load()
         Listen(PacketType.ActivateObject, r => World.Instance.ActivateObject(r.Int()));
 
         Listen(PacketType.CinemaAction, r => Cinema.Play(r.String()));
+
+        Listen(PacketType.CybergrindAction, r => CyberGrind.Instance.LoadPattern(r.Int(), r.String()));
     }
 
     public override void Update()
diff --git a/world/CyberGrind.cs b/world/CyberGrind.cs
new file mode 100644
index 00000000..60b5b5e4
--- /dev/null
+++ b/world/CyberGrind.cs
@@ -0,0 +1,110 @@
+namespace Jaket.World;
+
+using HarmonyLib;
+using Jaket.Content;
+using Jaket.IO;
+using Jaket.Net;
+using Jaket.UI;
+using UnityEngine.UI;
+
+/// <summary> Class responsible for Cybergrind synchronization </summary>
+public class CyberGrind : MonoSingleton<CyberGrind>
+{
+    /// <summary> UI Text, used for displaying current wave number. </summary>
+    public Text WaveNumberTextInstance;
+    /// <summary> UI Text, used for displaying current enemies left. </summary>
+    public Text EnemiesLeftTextInstance;
+    public DeathZone GridDeathZoneInstance;
+
+    /// <summary> Current wave count used for sync. </summary>
+    public int CurrentWave;
+    /// <summary> How many times pattern is loaded. Can't be bigger that 1. </summary>
+    public int LoadTimes;
+
+    /// <summary> Current pattern used for sync. </summary>
+    public ArenaPattern CurrentPattern;
+    public int LoadCount;
+
+    /// <summary> Sends the current arena pattern to all clients. </summary>
+    /// <param name="pattern"> Pattern to send to clients. </param>
+    public void SendPattern(ArenaPattern pattern)
+    {
+        // serialize pattern to send to clients
+        var data = SerializePattern(pattern);
+        // sending to clients
+        Networking.Redirect(Writer.Write(w =>
+        {
+            // wave number
+            w.Int(EndlessGrid.Instance.currentWave);
+            // pattern
+            w.String(data);
+        }), PacketType.CybergrindAction);
+    }
+
+    /// <summary> Load pattern serialized pattern and wave from server. </summary>
+    /// <param name="data"> String type represented in <see cref="SerializePattern(ArenaPattern)"/> </param>
+    public void LoadPattern(int currentWave, string data)
+    {
+        // sets current pattern to give it to LoadPattern method of original class
+        CurrentPattern = DeserializePattern(data);
+        // set current wave to synced one
+        CurrentWave = currentWave;
+        LoadPattern(CurrentPattern);
+    }
+
+    /// <summary> Loads pattern and invoking next wave. </summary>
+    /// <param name="pattern"> <see cref="ArenaPattern"/> to load. </param>
+    public void LoadPattern(ArenaPattern pattern)
+    {
+        // sets current pattern to give it to LoadPattern method of original class
+        CurrentPattern = pattern;
+        // start a new wave with server pattern
+        AccessTools.Method(typeof(EndlessGrid), "NextWave").Invoke(EndlessGrid.Instance, new object[] { });
+
+        // Do not make new wave if it is the first time
+        if (LoadTimes < 1)
+        {
+            LoadTimes++;
+            return;
+        }
+
+        // Resetting weapon charges (for example, railgun will be charged and etc.)
+        WeaponCharges.Instance.MaxCharges();
+
+        // play cheering sound effect
+        var cr = CrowdReactions.Instance;
+        cr.React(cr.cheerLong);
+
+        // resetting values after each wave
+        var nmov = NewMovement.Instance;
+        if (nmov.hp > 0)
+        {
+            nmov.ResetHardDamage();
+            nmov.exploded = false;
+            nmov.GetHealth(999, silent: true);
+            nmov.FullStamina();
+        }
+    }
+
+    /// <summary> Loads current pattern. </summary>
+    public void LoadCurrentPattern() => LoadPattern(CurrentPattern);
+
+    /// <summary> Deserialize pattern to load it to client. </summary>
+    /// <param name="data"> String to deserialize to <see cref="ArenaPattern"/>. </param>
+    public ArenaPattern DeserializePattern(string data)
+    {
+        // split a pattern into heights and prefabs.
+        string[] parts = data.Split('|');
+        return new ArenaPattern { heights = parts[0], prefabs = parts[1] };
+    }
+
+    /// <summary> Serializes pattern to string to send it to clients. </summary>
+    /// <param name="arena"> <see cref="ArenaPattern"/> to serialize to string. </param>
+    public string SerializePattern(ArenaPattern arena) => $"{arena.heights}|{arena.prefabs}";
+
+    public static void Load()
+    {
+        // initialize the singleton
+        UI.Object("CyberGrind").AddComponent<CyberGrind>();
+    }
+}
\ No newline at end of file