diff --git a/Ragon.Common/Protocol/RagonOperation.cs b/Ragon.Common/Protocol/RagonOperation.cs
index 7e7a720..567533a 100644
--- a/Ragon.Common/Protocol/RagonOperation.cs
+++ b/Ragon.Common/Protocol/RagonOperation.cs
@@ -1,13 +1,17 @@
 namespace Ragon.Common
 {
-  public enum RagonOperation: ushort
+  public enum RagonOperation: byte
   {
     AUTHORIZE,
     AUTHORIZED_SUCCESS,
     AUTHORIZED_FAILED,
     
+    JOIN_OR_CREATE_ROOM,
     JOIN_ROOM,
     LEAVE_ROOM,
+    OWNERSHIP_CHANGED,
+    JOIN_SUCCESS,
+    JOIN_FAILED,
     
     LOAD_SCENE,
     SCENE_IS_LOADED,
@@ -18,9 +22,7 @@ namespace Ragon.Common
     CREATE_ENTITY,
     DESTROY_ENTITY,
     
-    RESTORE_BEGIN,
-    RESTORE_END,
-    RESTORED,
+    SNAPSHOT,
     
     REPLICATE_ENTITY_STATE,
     REPLICATE_ENTITY_EVENT,
diff --git a/Ragon/Ragon.csproj b/Ragon/Ragon.csproj
index 79a3555..82932d4 100755
--- a/Ragon/Ragon.csproj
+++ b/Ragon/Ragon.csproj
@@ -26,4 +26,8 @@
       <ProjectReference Include="..\Ragon.Common\Ragon.Common.csproj" />
     </ItemGroup>
 
+    <ItemGroup>
+      <Folder Include="Sources\Utils" />
+    </ItemGroup>
+
 </Project>
diff --git a/Ragon/Sources/Configuration/ConfigurationLoader.cs b/Ragon/Sources/Configuration/ConfigurationLoader.cs
index f2ee380..1ddb919 100755
--- a/Ragon/Sources/Configuration/ConfigurationLoader.cs
+++ b/Ragon/Sources/Configuration/ConfigurationLoader.cs
@@ -9,7 +9,7 @@ namespace Ragon.Core
   public static class ConfigurationLoader
   {
     private static readonly Logger _logger = LogManager.GetCurrentClassLogger();
-    private static readonly string _serverVersion = "1.0.0-rc";
+    private static readonly string _serverVersion = "1.0.3-rc";
 
     private static void CopyrightInfo()
     {
diff --git a/Ragon/Sources/Plugin/PluginBase.cs b/Ragon/Sources/Plugin/PluginBase.cs
index 7dfe213..a1b2e39 100755
--- a/Ragon/Sources/Plugin/PluginBase.cs
+++ b/Ragon/Sources/Plugin/PluginBase.cs
@@ -7,33 +7,36 @@ using Ragon.Common;
 
 namespace Ragon.Core
 {
-  public class PluginBase: IDisposable
+  public class PluginBase : IDisposable
   {
     private delegate void SubscribeDelegate(Player player, ref ReadOnlySpan<byte> data);
+
     private delegate void SubscribeEntityDelegate(Player player, Entity entity, ref ReadOnlySpan<byte> data);
 
     private Dictionary<ushort, SubscribeDelegate> _globalEvents = new();
     private Dictionary<int, Dictionary<ushort, SubscribeEntityDelegate>> _entityEvents = new();
-    private BitBuffer _buffer = new BitBuffer(8192);
+    private readonly BitBuffer _buffer = new();
+    private readonly RagonSerializer _serializer = new();
 
     protected Room Room { get; private set; }
     protected ILogger _logger;
-    
+
     public void Attach(Room room)
     {
       _logger = LogManager.GetLogger($"Plugin<{GetType().Name}>");
-      
+
       Room = room;
-      
+
       _globalEvents.Clear();
       _entityEvents.Clear();
     }
+
     public void Dispose()
     {
       _globalEvents.Clear();
       _entityEvents.Clear();
     }
-    
+
     public void Subscribe<T>(ushort evntCode, Action<Player, T> action) where T : IRagonSerializable, new()
     {
       if (_globalEvents.ContainsKey(evntCode))
@@ -41,7 +44,7 @@ namespace Ragon.Core
         _logger.Warn($"Event subscriber already added {evntCode}");
         return;
       }
-      
+
       var data = new T();
       _globalEvents.Add(evntCode, (Player player, ref ReadOnlySpan<byte> raw) =>
       {
@@ -50,14 +53,14 @@ namespace Ragon.Core
           _logger.Warn($"Payload is empty for event {evntCode}");
           return;
         }
-        
+
         _buffer.Clear();
         _buffer.FromSpan(ref raw, raw.Length);
         data.Deserialize(_buffer);
         action.Invoke(player, data);
       });
     }
-    
+
     public void Subscribe(ushort evntCode, Action<Player> action)
     {
       if (_globalEvents.ContainsKey(evntCode))
@@ -65,11 +68,8 @@ namespace Ragon.Core
         _logger.Warn($"Event subscriber already added {evntCode}");
         return;
       }
-      
-      _globalEvents.Add(evntCode, (Player player, ref ReadOnlySpan<byte> raw) =>
-      {
-        action.Invoke(player);
-      });
+
+      _globalEvents.Add(evntCode, (Player player, ref ReadOnlySpan<byte> raw) => { action.Invoke(player); });
     }
 
     public void Subscribe<T>(Entity entity, ushort evntCode, Action<Player, Entity, T> action) where T : IRagonSerializable, new()
@@ -80,8 +80,8 @@ namespace Ragon.Core
         {
           _logger.Warn($"Event subscriber already added {evntCode} for {entity.EntityId}");
           return;
-        }   
-        
+        }
+
         var data = new T();
         _entityEvents[entity.EntityId].Add(evntCode, (Player player, Entity ent, ref ReadOnlySpan<byte> raw) =>
         {
@@ -90,13 +90,13 @@ namespace Ragon.Core
             _logger.Warn($"Payload is empty for entity {ent.EntityId} event {evntCode}");
             return;
           }
-          
+
           _buffer.Clear();
           _buffer.FromSpan(ref raw, raw.Length);
           data.Deserialize(_buffer);
           action.Invoke(player, ent, data);
         });
-        
+
         return;
       }
 
@@ -110,6 +110,7 @@ namespace Ragon.Core
             _logger.Warn($"Payload is empty for entity {ent.EntityId} event {evntCode}");
             return;
           }
+
           _buffer.Clear();
           _buffer.FromSpan(ref raw, raw.Length);
           data.Deserialize(_buffer);
@@ -126,24 +127,18 @@ namespace Ragon.Core
         {
           _logger.Warn($"Event subscriber already added {evntCode} for {entity.EntityId}");
           return;
-        }   
-        
-        _entityEvents[entity.EntityId].Add(evntCode, (Player player, Entity ent, ref ReadOnlySpan<byte> raw) =>
-        {
-          action.Invoke(player, ent);
-        });
+        }
+
+        _entityEvents[entity.EntityId].Add(evntCode, (Player player, Entity ent, ref ReadOnlySpan<byte> raw) => { action.Invoke(player, ent); });
         return;
       }
 
       {
         _entityEvents.Add(entity.EntityId, new Dictionary<ushort, SubscribeEntityDelegate>());
-        _entityEvents[entity.EntityId].Add(evntCode, (Player player, Entity ent, ref ReadOnlySpan<byte> raw) =>
-        {
-          action.Invoke(player, ent);
-        });
+        _entityEvents[entity.EntityId].Add(evntCode, (Player player, Entity ent, ref ReadOnlySpan<byte> raw) => { action.Invoke(player, ent); });
       }
     }
-    
+
     public void UnsubscribeAll()
     {
       _globalEvents.Clear();
@@ -157,7 +152,7 @@ namespace Ragon.Core
 
       if (!_entityEvents[entityId].ContainsKey(evntCode))
         return false;
-      
+
       var player = Room.GetPlayerById(peerId);
       var entity = Room.GetEntityById(entityId);
       _entityEvents[entityId][evntCode].Invoke(player, entity, ref payload);
@@ -179,75 +174,67 @@ namespace Ragon.Core
 
     public void SendEvent(Player player, uint eventCode, IRagonSerializable payload)
     {
+      _serializer.Clear();
+      _serializer.WriteOperation(RagonOperation.REPLICATE_EVENT);
+      
       _buffer.Clear();
       payload.Serialize(_buffer);
-
-      var sendData = new byte[_buffer.Length + 4];
-      Span<byte> data = sendData.AsSpan();
-      Span<byte> operationData = data.Slice(0, 2);
-      Span<byte> eventCodeData = data.Slice(2, 2);
-      Span<byte> payloadData = data.Slice(4, data.Length - 4);
-
+      
+      var payloadData = _serializer.GetWritableData(_buffer.Length);
       _buffer.ToSpan(ref payloadData);
-      
-      RagonHeader.WriteUShort((ushort) RagonOperation.REPLICATE_EVENT, ref operationData);
-      RagonHeader.WriteUShort((ushort) eventCode, ref eventCodeData);
-      
+
+      var sendData = _serializer.ToArray();
       Room.Send(player.PeerId, sendData);
     }
-    
-    public void SendEvent(ushort eventCode, IRagonSerializable payload)
+
+    public void BroadcastEvent(ushort eventCode, IRagonSerializable payload)
     {
+      _serializer.Clear();
+      _serializer.WriteOperation(RagonOperation.REPLICATE_EVENT);
+      
       _buffer.Clear();
       payload.Serialize(_buffer);
-
-      var sendData = new byte[_buffer.Length + 4];
-      Span<byte> data = sendData.AsSpan();
-      Span<byte> operationData = data.Slice(0, 2);
-      Span<byte> eventCodeData = data.Slice(2, 2);
-      Span<byte> payloadData = data.Slice(4, _buffer.Length);
       
-      RagonHeader.WriteUShort((ushort) RagonOperation.REPLICATE_EVENT,ref operationData);
-      RagonHeader.WriteUShort( eventCode, ref eventCodeData);
-
+      var payloadData = _serializer.GetWritableData(_buffer.Length);
       _buffer.ToSpan(ref payloadData);
-      
-      Room.Broadcast(sendData);
+
+      var sendData = _serializer.ToArray();
+      Room.Broadcast(sendData, DeliveryType.Reliable);
     }
-    
+
     public void SendEntityEvent(Player player, Entity entity, IRagonSerializable payload)
     {
+      _serializer.Clear();
+      _serializer.WriteOperation(RagonOperation.REPLICATE_ENTITY_EVENT);
+      _serializer.WriteInt(entity.EntityId);
+
       _buffer.Clear();
       payload.Serialize(_buffer);
+      
+      var payloadData = _serializer.GetWritableData(_buffer.Length);
+      _buffer.ToSpan(ref payloadData);
 
-      var sendData = new byte[_buffer.Length + 6];
-      Span<byte> data = sendData.AsSpan();
-      Span<byte> operationData = data.Slice(0, 2);
-      Span<byte> entityData = data.Slice(2, 4);
-      
-      RagonHeader.WriteUShort((ushort) RagonOperation.REPLICATE_EVENT, ref operationData);
-      RagonHeader.WriteInt(entity.EntityId, ref entityData);
-      
-      Room.Send(player.PeerId, sendData);
+      var sendData = _serializer.ToArray();
+      Room.Send(player.PeerId, sendData, DeliveryType.Reliable);
     }
-     
-    public void SendEntityEvent(Entity entity, IRagonSerializable payload)
+
+    public void BroadcastEntityEvent(Entity entity, IRagonSerializable payload)
     {
+      _serializer.Clear();
+      _serializer.WriteOperation(RagonOperation.REPLICATE_ENTITY_EVENT);
+      _serializer.WriteInt(entity.EntityId);
+
       _buffer.Clear();
       payload.Serialize(_buffer);
+      
+      var payloadData = _serializer.GetWritableData(_buffer.Length);
+      _buffer.ToSpan(ref payloadData);
 
-      var sendData = new byte[_buffer.Length + 6];
-      Span<byte> data = sendData.AsSpan();
-      Span<byte> operationData = data.Slice(0, 2);
-      Span<byte> entityData = data.Slice(2, 4);
-      
-      RagonHeader.WriteUShort((ushort) RagonOperation.REPLICATE_EVENT, ref operationData);
-      RagonHeader.WriteInt(entity.EntityId, ref entityData);
-      
+      var sendData = _serializer.ToArray();
       Room.Broadcast(sendData);
     }
 
-    
+
     #region VIRTUAL
 
     public virtual void OnPlayerJoined(Player player)
@@ -258,18 +245,16 @@ namespace Ragon.Core
     {
     }
 
-    public virtual void OnOwnerChanged(Player player)
+    public virtual void OnOwnershipChanged(Player player)
     {
-      
     }
+
     public virtual void OnEntityCreated(Player creator, Entity entity)
     {
-      
     }
 
     public virtual void OnEntityDestroyed(Player destoyer, Entity entity)
     {
-      
     }
 
     public virtual void OnStart()
diff --git a/Ragon/Sources/Rooms/Room.cs b/Ragon/Sources/Rooms/Room.cs
index 8f19568..9ab93cd 100755
--- a/Ragon/Sources/Rooms/Room.cs
+++ b/Ragon/Sources/Rooms/Room.cs
@@ -1,10 +1,6 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using System.Runtime.CompilerServices;
-using System.Runtime.InteropServices;
-using System.Text;
-using NetStack.Serialization;
 using NLog;
 using Ragon.Common;
 
@@ -26,12 +22,17 @@ namespace Ragon.Core
 
     private readonly PluginBase _plugin;
     private readonly RoomThread _roomThread;
+    private readonly RagonSerializer _serializer = new(2048);
 
     // Cache
     private uint[] _readyPlayers = Array.Empty<uint>();
     private uint[] _allPlayers = Array.Empty<uint>();
     private Entity[] _entitiesAll = Array.Empty<Entity>();
 
+    public Player GetPlayerById(uint peerId) => _players[peerId];
+    public Entity GetEntityById(int entityId) => _entities[entityId];
+    public Player GetOwner() => _players[_owner];
+
     public Room(RoomThread roomThread, PluginBase pluginBase, string map, int min, int max)
     {
       _roomThread = roomThread;
@@ -55,51 +56,47 @@ namespace Ragon.Core
 
       var player = new Player()
       {
+        Id = Guid.NewGuid().ToString(),
         PlayerName = "Player " + peerId,
         PeerId = peerId,
         IsLoaded = false,
         Entities = new List<Entity>(),
         EntitiesIds = new List<int>(),
       };
+      
+      {
+        _serializer.Clear();
+        _serializer.WriteOperation(RagonOperation.PLAYER_JOINED);
+        _serializer.WriteUShort((ushort) player.PeerId);
+        _serializer.WriteString(player.Id);
+        _serializer.WriteString(player.PlayerName);
 
+        var sendData = _serializer.ToArray();
+        Broadcast(sendData, DeliveryType.Reliable);
+      }
+      
       _players.Add(peerId, player);
       _allPlayers = _players.Select(p => p.Key).ToArray();
-
+      
       {
-        var idRaw = Encoding.UTF8.GetBytes(Id).AsSpan();
+        _serializer.Clear();
+        _serializer.WriteOperation(RagonOperation.JOIN_SUCCESS);
+        _serializer.WriteString(Id);
+        _serializer.WriteString(player.Id);
+        _serializer.WriteString(GetOwner().Id);
+        _serializer.WriteUShort((ushort) PlayersMin);
+        _serializer.WriteUShort((ushort) PlayersMax);
 
-        var sendData = new byte[idRaw.Length + 18];
-        var data = sendData.AsSpan();
-
-        Span<byte> operationData = data.Slice(0, 2);
-        Span<byte> peerData = data.Slice(2, 4);
-        Span<byte> ownerData = data.Slice(4, 4);
-        Span<byte> minData = data.Slice(10, 4);
-        Span<byte> maxData = data.Slice(14, 4);
-        Span<byte> idData = data.Slice(18, idRaw.Length);
-
-        RagonHeader.WriteUShort((ushort) RagonOperation.JOIN_ROOM, ref operationData);
-        RagonHeader.WriteInt((int) peerId, ref peerData);
-        RagonHeader.WriteInt((int) _owner, ref ownerData);
-        RagonHeader.WriteInt(PlayersMin, ref minData);
-        RagonHeader.WriteInt(PlayersMax, ref maxData);
-
-        idRaw.CopyTo(idData);
-
-        Send(peerId, sendData);
+        var sendData = _serializer.ToArray();
+        Send(peerId, sendData, DeliveryType.Reliable);
       }
 
       {
-        var sceneRawData = Encoding.UTF8.GetBytes(Map).AsSpan();
-        var sendData = new byte[sceneRawData.Length + 2];
-        var data = sendData.AsSpan();
-
-        Span<byte> operationData = data.Slice(0, 2);
-        Span<byte> sceneData = data.Slice(2, sceneRawData.Length);
-
-        RagonHeader.WriteUShort((ushort) RagonOperation.LOAD_SCENE, ref operationData);
-        sceneRawData.CopyTo(sceneData);
+        _serializer.Clear();
+        _serializer.WriteOperation(RagonOperation.LOAD_SCENE);
+        _serializer.WriteString(Map);
 
+        var sendData = _serializer.ToArray();
         Send(peerId, sendData, DeliveryType.Reliable);
       }
     }
@@ -109,55 +106,69 @@ namespace Ragon.Core
       if (_players.Remove(peerId, out var player))
       {
         _allPlayers = _players.Select(p => p.Key).ToArray();
+        var isOwnershipChange = player.PeerId == _owner;
 
-        _plugin.OnPlayerLeaved(player);
-
-        foreach (var entityId in player.EntitiesIds)
         {
-          var sendData = new byte[6];
-          var entityData = sendData.AsSpan();
-          var operationData = entityData.Slice(0, 2);
+          _plugin.OnPlayerLeaved(player);
 
-          RagonHeader.WriteUShort((ushort) RagonOperation.DESTROY_ENTITY, ref operationData);
-          RagonHeader.WriteInt(entityId, ref entityData);
+          _serializer.Clear();
+          _serializer.WriteOperation(RagonOperation.PLAYER_LEAVED);
+          _serializer.WriteString(player.Id);
 
+          _serializer.WriteUShort((ushort) player.EntitiesIds.Count);
+          foreach (var entityId in player.EntitiesIds)
+          {
+            _serializer.WriteInt(entityId);
+            _entities.Remove(entityId);
+          }
+
+          var sendData = _serializer.ToArray();
           Broadcast(_allPlayers, sendData);
+        }
 
-          _entities.Remove(entityId);
+        if (_allPlayers.Length > 0 && isOwnershipChange)
+        {
+          var newRoomOwnerId = _allPlayers[0];
+          var newRoomOwner = _players[newRoomOwnerId];
+
+          {
+            _plugin.OnOwnershipChanged(newRoomOwner);
+
+            _serializer.Clear();
+            _serializer.WriteOperation(RagonOperation.OWNERSHIP_CHANGED);
+            _serializer.WriteString(newRoomOwner.Id);
+
+            var sendData = _serializer.ToArray();
+            Broadcast(_allPlayers, sendData);
+          }
         }
       }
     }
 
     public void ProcessEvent(RagonOperation operation, uint peerId, ReadOnlySpan<byte> rawData)
     {
+      _serializer.Clear();
+      _serializer.FromSpan(ref rawData);
+
       switch (operation)
       {
         case RagonOperation.REPLICATE_ENTITY_STATE:
         {
-          var entityData = rawData.Slice(2, 4);
-          var entityId = RagonHeader.ReadInt(ref entityData);
+          var entityId = _serializer.ReadInt();
           if (_entities.TryGetValue(entityId, out var ent))
           {
             if (ent.State.Authority == RagonAuthority.OWNER_ONLY && ent.OwnerId != peerId)
               return;
 
-            ent.State.Data = rawData.Slice(6, rawData.Length - 6).ToArray();
-
-            var data = new byte[rawData.Length];
-
-            rawData.CopyTo(data);
-
-            Broadcast(_readyPlayers, data);
+            var entityStateData = _serializer.ReadData(_serializer.Size);
+            ent.State.Write(ref entityStateData);
           }
-
           break;
         }
         case RagonOperation.REPLICATE_ENTITY_EVENT:
         {
-          var evntCodeData = rawData.Slice(2, 2);
-          var entityIdData = rawData.Slice(4, 4);
-          var evntId = RagonHeader.ReadUShort(ref evntCodeData);
-          var entityId = RagonHeader.ReadInt(ref entityIdData);
+          var evntId = _serializer.ReadUShort();
+          var entityId = _serializer.ReadInt();
 
           if (!_entities.TryGetValue(entityId, out var ent))
             return;
@@ -165,86 +176,79 @@ namespace Ragon.Core
           if (ent.Authority == RagonAuthority.OWNER_ONLY && ent.OwnerId != peerId)
             return;
 
-          var payload = rawData.Slice(8, rawData.Length - 8);
+          var payload = _serializer.ReadData(_serializer.Size);
           if (_plugin.InternalHandle(peerId, entityId, evntId, ref payload))
             return;
 
           var data = new byte[rawData.Length];
-
           rawData.CopyTo(data);
-
           Broadcast(_readyPlayers, data, DeliveryType.Reliable);
           break;
         }
         case RagonOperation.REPLICATE_EVENT:
         {
-          var evntCodeData = rawData.Slice(2, 2);
-          var evntId = RagonHeader.ReadUShort(ref evntCodeData);
-
-          var payload = rawData.Slice(4, rawData.Length - 4);
+          var evntId = _serializer.ReadUShort();
+          var payload = _serializer.ReadData(_serializer.Size);
           if (_plugin.InternalHandle(peerId, evntId, ref payload))
             return;
 
-          var data = new byte[rawData.Length];
-
-          rawData.CopyTo(data);
-
-          Broadcast(_readyPlayers, data, DeliveryType.Reliable);
+          _serializer.Clear();
+          _serializer.WriteOperation(RagonOperation.REPLICATE_EVENT);
+          _serializer.WriteUShort(evntId);
+          var sendData = _serializer.ToArray();
+          Broadcast(_readyPlayers, sendData, DeliveryType.Reliable);
           break;
         }
         case RagonOperation.CREATE_ENTITY:
         {
-          var typeData = rawData.Slice(2, 2);
-          var authorityData = rawData.Slice(2, 2);
-          var entityPayloadData = rawData.Slice(4, rawData.Length - 4);
-
-          var entityType = RagonHeader.ReadUShort(ref typeData);
-          var stateAuthority = (RagonAuthority) authorityData[0];
-          var eventAuthority = (RagonAuthority) authorityData[1];
+          var entityType = _serializer.ReadUShort();
+          var stateAuthority = (RagonAuthority) _serializer.ReadByte();
+          var eventAuthority = (RagonAuthority) _serializer.ReadByte();
           var entity = new Entity(peerId, entityType, stateAuthority, eventAuthority);
-          entity.State.Data = entityPayloadData.ToArray();
+          
+          {
+            var entityPayload = _serializer.ReadData(_serializer.Size);
+            entity.Payload.Write(ref entityPayload);
+          }
 
           var player = _players[peerId];
           player.Entities.Add(entity);
           player.EntitiesIds.Add(entity.EntityId);
 
+          var ownerId = (ushort) peerId;
+
           _entities.Add(entity.EntityId, entity);
           _entitiesAll = _entities.Values.ToArray();
 
           _plugin.OnEntityCreated(player, entity);
 
-          var data = new byte[entityPayloadData.Length + 14];
-          var sendData = data.AsSpan();
-          var operationData = sendData.Slice(0, 2);
-          var entityTypeData = sendData.Slice(2, 2);
-          var authority = sendData.Slice(4, 2);
-          var entityIdData = sendData.Slice(6, 4);
-          var peerData = sendData.Slice(10, 4);
-          var payload = sendData.Slice(14, entityPayloadData.Length);
-
-          entityPayloadData.CopyTo(payload);
-
-          authority[0] = authorityData[0];
-          authority[1] = authorityData[1];
-
-          RagonHeader.WriteUShort((ushort) RagonOperation.CREATE_ENTITY, ref operationData);
-          RagonHeader.WriteUShort(entityType, ref entityTypeData);
-          RagonHeader.WriteInt(entity.EntityId, ref entityIdData);
-          RagonHeader.WriteInt((int) peerId, ref peerData);
-
-          Broadcast(_allPlayers, data, DeliveryType.Reliable);
+          _serializer.Clear();
+          _serializer.WriteOperation(RagonOperation.CREATE_ENTITY);
+          _serializer.WriteUShort(entityType);
+          _serializer.WriteByte((byte) stateAuthority);
+          _serializer.WriteByte((byte) eventAuthority);
+          _serializer.WriteInt(entity.EntityId);
+          _serializer.WriteUShort(ownerId);
+          
+          {
+            var entityPayload = entity.Payload.Read();
+            _serializer.WriteData(ref entityPayload);
+          }
+          
+          var sendData = _serializer.ToArray();
+          Broadcast(_allPlayers, sendData, DeliveryType.Reliable);
           break;
         }
         case RagonOperation.DESTROY_ENTITY:
         {
-          var entityData = rawData.Slice(2, 4);
-          var entityId = RagonHeader.ReadInt(ref entityData);
+          var entityId = _serializer.ReadInt();
           if (_entities.TryGetValue(entityId, out var entity))
           {
             if (entity.Authority == RagonAuthority.OWNER_ONLY && entity.OwnerId != peerId)
               return;
-            
+
             var player = _players[peerId];
+            var destroyPayload = _serializer.ReadData(_serializer.Size);
 
             player.Entities.Remove(entity);
             player.EntitiesIds.Remove(entity.EntityId);
@@ -254,49 +258,53 @@ namespace Ragon.Core
 
             _plugin.OnEntityDestroyed(player, entity);
 
-            var data = new byte[rawData.Length];
-            Span<byte> sendData = data.AsSpan();
-            rawData.CopyTo(sendData);
+            _serializer.Clear();
+            _serializer.WriteOperation(RagonOperation.DESTROY_ENTITY);
+            _serializer.WriteInt(entityId);
+            _serializer.WriteData(ref destroyPayload);
 
-            Broadcast(_readyPlayers, data, DeliveryType.Reliable);
+            var sendData = _serializer.ToArray();
+            Broadcast(_readyPlayers, sendData, DeliveryType.Reliable);
           }
 
           break;
         }
         case RagonOperation.SCENE_IS_LOADED:
         {
-          Send(peerId, RagonOperation.RESTORE_BEGIN, DeliveryType.Reliable);
-          foreach (var entity in _entities.Values)
+          _serializer.Clear();
+          _serializer.WriteOperation(RagonOperation.SNAPSHOT);
+
+          _serializer.WriteInt(_readyPlayers.Length + 1);
+          foreach (var playerPeerId in _readyPlayers)
           {
-            var entityState = entity.State.Data.AsSpan();
-            var data = new byte[entity.State.Data.Length + 14];
+            _serializer.WriteString(_players[playerPeerId].Id);
+            _serializer.WriteUShort((ushort) playerPeerId);
+            _serializer.WriteString(_players[playerPeerId].PlayerName);
+          }
+          
+          _serializer.WriteString(_players[peerId].Id);
+          _serializer.WriteUShort((ushort) peerId);
+          _serializer.WriteString(_players[peerId].PlayerName);
 
-            Span<byte> sendData = data.AsSpan();
-            Span<byte> operationData = sendData.Slice(0, 2);
-            Span<byte> entityTypeData = sendData.Slice(2, 2);
-            Span<byte> authorityData = sendData.Slice(4, 2);
-            Span<byte> entityData = sendData.Slice(6, 4);
-            Span<byte> ownerData = sendData.Slice(10, 4);
-            Span<byte> entityStateData = sendData.Slice(14, entity.State.Data.Length);
-
-            RagonHeader.WriteUShort((ushort) RagonOperation.CREATE_ENTITY, ref operationData);
-            RagonHeader.WriteUShort(entity.EntityType, ref entityTypeData);
-            RagonHeader.WriteInt(entity.EntityId, ref entityData);
-            RagonHeader.WriteInt((int) entity.OwnerId, ref ownerData);
-
-            authorityData[0] = (byte) entity.State.Authority;
-            authorityData[1] = (byte) entity.Authority;
-            
-            entityState.CopyTo(entityStateData);
-
-            Send(peerId, data, DeliveryType.Reliable);
+          _serializer.WriteInt(_entitiesAll.Length);
+          foreach (var entity in _entitiesAll)
+          {
+            _serializer.WriteInt(entity.EntityId);
+            _serializer.WriteByte((byte) entity.State.Authority);
+            _serializer.WriteByte((byte) entity.Authority);
+            _serializer.WriteUShort(entity.EntityType);
+            _serializer.WriteUShort((ushort) entity.OwnerId);
+            var payload = entity.Payload.Read();
+            _serializer.WriteUShort((ushort) payload.Length);
+            _serializer.WriteData(ref payload);
+            var state = entity.State.Read();
+            _serializer.WriteUShort((ushort) state.Length);
+            _serializer.WriteData(ref state);
           }
 
-          Send(peerId, RagonOperation.RESTORE_END, DeliveryType.Reliable);
-          break;
-        }
-        case RagonOperation.RESTORED:
-        {
+          var sendData = _serializer.ToArray();
+          Send(peerId, sendData, DeliveryType.Reliable);
+
           _players[peerId].IsLoaded = true;
           _readyPlayers = _players.Where(p => p.Value.IsLoaded).Select(p => p.Key).ToArray();
 
@@ -310,6 +318,24 @@ namespace Ragon.Core
     {
       _ticks++;
       _plugin.OnTick(_ticks, deltaTime);
+
+      foreach (var entity in _entitiesAll)
+      {
+        if (entity.State.isDirty)
+        {
+          var state = entity.State.Read();
+
+          _serializer.Clear();
+          _serializer.WriteOperation(RagonOperation.REPLICATE_ENTITY_STATE);
+          _serializer.WriteInt(entity.EntityId);
+          _serializer.WriteData(ref state);
+
+          var sendData = _serializer.ToArray();
+          Broadcast(_readyPlayers, sendData, DeliveryType.Unreliable);
+
+          entity.State.Clear();
+        }
+      }
     }
 
     public void Start()
@@ -331,26 +357,6 @@ namespace Ragon.Core
       _plugin.Dispose();
     }
 
-    public Player GetPlayerById(uint peerId) => _players[peerId];
-    public Entity GetEntityById(int entityId) => _entities[entityId];
-    public Player GetOwner() => _players[_owner];
-
-    public void Send(uint peerId, RagonOperation operation, DeliveryType deliveryType = DeliveryType.Unreliable)
-    {
-      var rawData = new byte[2];
-      var rawDataSpan = new Span<byte>(rawData);
-
-      RagonHeader.WriteUShort((ushort) operation, ref rawDataSpan);
-
-      _roomThread.WriteOutEvent(new Event()
-      {
-        PeerId = peerId,
-        Data = rawData,
-        Type = EventType.DATA,
-        Delivery = deliveryType,
-      });
-    }
-
     public void Send(uint peerId, byte[] rawData, DeliveryType deliveryType = DeliveryType.Unreliable)
     {
       _roomThread.WriteOutEvent(new Event()
diff --git a/Ragon/Sources/Rooms/RoomManager.cs b/Ragon/Sources/Rooms/RoomManager.cs
index 3d5cd3b..77a7ef5 100644
--- a/Ragon/Sources/Rooms/RoomManager.cs
+++ b/Ragon/Sources/Rooms/RoomManager.cs
@@ -14,7 +14,7 @@ namespace Ragon.Core
     private PluginFactory _factory;
     private AuthorizationManager _manager;
     private RoomThread _roomThread;
-
+    private RagonSerializer _serializer;
     public Action<(uint, Room)> OnJoined;
     public Action<(uint, Room)> OnLeaved;
 
@@ -23,6 +23,7 @@ namespace Ragon.Core
       _roomThread = roomThread;
       _factory = factory;
 
+      _serializer = new RagonSerializer();
       _manager = _factory.CreateManager(roomThread.Configuration);
       _rooms = new List<Room>();
       _peersByRoom = new Dictionary<uint, Room>();
@@ -37,9 +38,40 @@ namespace Ragon.Core
           OnAuthorize(peerId, payload);
           break;
         }
+        case RagonOperation.JOIN_OR_CREATE_ROOM:
+        {
+          var room = JoinOrCreate(peerId, payload);
+          if (room == null)
+          {
+            var sendData = new[] {(byte) RagonOperation.JOIN_FAILED};
+            _roomThread.WriteOutEvent(new Event()
+            {
+              Delivery = DeliveryType.Reliable,
+              Type = EventType.DATA,
+              Data = sendData,
+              PeerId = peerId,
+            });
+            return;
+          }
+          OnJoined?.Invoke((peerId, room));
+          break;
+        }
         case RagonOperation.JOIN_ROOM:
         {
           var room = Join(peerId, payload);
+          if (room == null)
+          {
+            var sendData = new[] {(byte) RagonOperation.JOIN_FAILED};
+            _roomThread.WriteOutEvent(new Event()
+            {
+              Delivery = DeliveryType.Reliable,
+              Type = EventType.DATA,
+              Data = sendData,
+              PeerId = peerId,
+            });
+            
+            return;
+          }
           OnJoined?.Invoke((peerId, room));
           break;
         }
@@ -56,25 +88,18 @@ namespace Ragon.Core
     {
       if (_manager.OnAuthorize(peerId, ref payload))
       {
-        var sendData = new byte[2];
-        Span<byte> data = sendData.AsSpan();
-        
-        RagonHeader.WriteUShort((ushort) RagonOperation.AUTHORIZED_SUCCESS, ref data);
-
-        _roomThread.WriteOutEvent(new Event()
-        {
-          Delivery = DeliveryType.Reliable,
-          Type = EventType.DATA,
-          Data = sendData,
-          PeerId = peerId,
-        });  
-      }
-      else
-      {
-        var sendData =  new byte[2];
-        var data = sendData.AsSpan();
-        RagonHeader.WriteUShort((ushort) RagonOperation.AUTHORIZED_FAILED, ref data);
-
+        var sendData = new[] {(byte) RagonOperation.AUTHORIZED_SUCCESS};
+        _roomThread.WriteOutEvent(new Event()
+        {
+          Delivery = DeliveryType.Reliable,
+          Type = EventType.DATA,
+          Data = sendData,
+          PeerId = peerId,
+        });
+      }
+      else
+      {
+        var sendData = new[] {(byte) RagonOperation.AUTHORIZED_FAILED};
         _roomThread.WriteOutEvent(new Event()
         {
           Delivery = DeliveryType.Reliable,
@@ -82,7 +107,6 @@ namespace Ragon.Core
           Data = sendData,
           PeerId = peerId,
         });
-        
         _roomThread.WriteOutEvent(new Event()
         {
           Delivery = DeliveryType.Reliable,
@@ -93,15 +117,36 @@ namespace Ragon.Core
       }
     }
 
-    public Room Join(uint peerId, ReadOnlySpan<byte> payload)
+    public Room? Join(uint peerId, ReadOnlySpan<byte> payload)
     {
-      var minData = payload.Slice(0, 2);
-      var maxData = payload.Slice(2, 2);
-      var mapData = payload.Slice(4, payload.Length - 4);
+      var roomId = Encoding.UTF8.GetString(payload);
       
-      var map = Encoding.UTF8.GetString(mapData);
-      var min = RagonHeader.ReadUShort(ref minData);
-      var max = RagonHeader.ReadUShort(ref maxData);
+      if (_rooms.Count > 0)
+      {
+        foreach (var existRoom in _rooms)
+        {
+          if (existRoom.Id == roomId && existRoom.PlayersCount < existRoom.PlayersMax)
+          {
+            existRoom.Joined(peerId, payload);
+
+            _peersByRoom.Add(peerId, existRoom);
+
+            return existRoom;
+          }
+        }
+      }
+
+      return null;
+    }
+
+    public Room? JoinOrCreate(uint peerId, ReadOnlySpan<byte> payload)
+    {
+      _serializer.Clear();
+      _serializer.FromSpan(ref payload);
+
+      var min = _serializer.ReadUShort();
+      var max = _serializer.ReadUShort();
+      var map = _serializer.ReadString();
       
       Room room = null;
       if (_rooms.Count > 0)
@@ -112,11 +157,11 @@ namespace Ragon.Core
           {
             room = existRoom;
             room.Joined(peerId, payload);
-            
+
             _peersByRoom.Add(peerId, room);
-            
-            return room;            
-          }  
+
+            return room;
+          }
         }
       }
 
@@ -127,7 +172,7 @@ namespace Ragon.Core
       room = new Room(_roomThread, plugin, map, min, max);
       room.Joined(peerId, payload);
       room.Start();
-      
+
       _peersByRoom.Add(peerId, room);
       _rooms.Add(room);
 
@@ -136,8 +181,8 @@ namespace Ragon.Core
 
     public Room Left(uint peerId, ReadOnlySpan<byte> payload)
     {
-      _peersByRoom.Remove(peerId, out var room); 
-      
+      _peersByRoom.Remove(peerId, out var room);
+
       return room;
     }
 
@@ -147,10 +192,10 @@ namespace Ragon.Core
       if (room != null)
       {
         room.Leave(peerId);
-        if (room.PlayersCount <= 0)
+        if (room.PlayersCount <= 0 && room.PlayersMin > 0)
         {
           _rooms.Remove(room);
-          
+
           room.Stop();
           room.Dispose();
         }
diff --git a/Ragon/Sources/Rooms/RoomThread.cs b/Ragon/Sources/Rooms/RoomThread.cs
index a326c4d..089c3b5 100755
--- a/Ragon/Sources/Rooms/RoomThread.cs
+++ b/Ragon/Sources/Rooms/RoomThread.cs
@@ -16,8 +16,8 @@ namespace Ragon.Core
     private readonly Stopwatch _timer;
     private readonly ILogger _logger = LogManager.GetCurrentClassLogger();
     private readonly float _deltaTime = 0.0f;
-    private RingBuffer<Event> _receiveBuffer = new RingBuffer<Event>(8192 + 8192);
-    private RingBuffer<Event> _sendBuffer = new RingBuffer<Event>(8192 + 8192);
+    private readonly RingBuffer<Event> _receiveBuffer = new(2048);
+    private readonly RingBuffer<Event> _sendBuffer = new(2048);
 
     public Configuration Configuration { get; private set; }
     public bool ReadOutEvent(out Event evnt) => _sendBuffer.TryDequeue(out evnt);
@@ -70,13 +70,14 @@ namespace Ragon.Core
           if (evnt.Type == EventType.DATA)
           {
             var data = new ReadOnlySpan<byte>(evnt.Data);
-            var operationData = data.Slice(0, 2);
-            var operation = (RagonOperation) RagonHeader.ReadUShort(ref operationData);
+            var operation = (RagonOperation) data[0];
+            var payload = data.Slice(1, data.Length - 1);
+            
             if (_socketByRooms.TryGetValue(evnt.PeerId, out var room))
             {
               try
               {
-                room.ProcessEvent(operation, evnt.PeerId, data);
+                room.ProcessEvent(operation, evnt.PeerId, payload);
               }
               catch (Exception exception)
               {
@@ -85,7 +86,6 @@ namespace Ragon.Core
             }
             else
             {
-              var payload = data.Slice(2, data.Length - 2);
               _roomManager.ProcessEvent(operation, evnt.PeerId, payload);
             }
           }