diff --git a/src/Builtin/Worlds.cs b/src/Builtin/Worlds.cs
index 5f50cfb..75e5e4d 100644
--- a/src/Builtin/Worlds.cs
+++ b/src/Builtin/Worlds.cs
@@ -13,9 +13,10 @@ namespace DCFApixels.DragonECS
     [MetaID("DragonECS_4EE3527C92015BAB0299CB7B4E2663D1")]
     public sealed class EcsDefaultWorld : EcsWorld, IInjectionUnit
     {
-        public EcsDefaultWorld() : base() { }
-        public EcsDefaultWorld(EcsWorldConfig config = null, string name = null, short worldID = -1) : base(config, name == null ? "Default" : name, worldID) { }
-        public EcsDefaultWorld(IConfigContainer configs, string name = null, short worldID = -1) : base(configs, name == null ? "Default" : name, worldID) { }
+        private const string DEFAULT_NAME = "Default";
+        public EcsDefaultWorld() : base(default(EcsWorldConfig), DEFAULT_NAME) { }
+        public EcsDefaultWorld(EcsWorldConfig config = null, string name = null, short worldID = -1) : base(config, name == null ? DEFAULT_NAME : name, worldID) { }
+        public EcsDefaultWorld(IConfigContainer configs, string name = null, short worldID = -1) : base(configs, name == null ? DEFAULT_NAME : name, worldID) { }
         void IInjectionUnit.InitInjectionNode(InjectionGraph nodes) { nodes.AddNode(this); }
     }
     /// <summary> EcsWrold for store event entities. </summary>
@@ -26,9 +27,10 @@ namespace DCFApixels.DragonECS
     [MetaID("DragonECS_D7CE527C920160BCD765EFA72DBF8B89")]
     public sealed class EcsEventWorld : EcsWorld, IInjectionUnit
     {
-        public EcsEventWorld() : base() { }
-        public EcsEventWorld(EcsWorldConfig config = null, string name = null, short worldID = -1) : base(config, name == null ? "Events" : name, worldID) { }
-        public EcsEventWorld(IConfigContainer configs, string name = null, short worldID = -1) : base(configs, name == null ? "Events" : name, worldID) { }
+        private const string DEFAULT_NAME = "Events";
+        public EcsEventWorld() : base(default(EcsWorldConfig), DEFAULT_NAME) { }
+        public EcsEventWorld(EcsWorldConfig config = null, string name = null, short worldID = -1) : base(config, name == null ? DEFAULT_NAME : name, worldID) { }
+        public EcsEventWorld(IConfigContainer configs, string name = null, short worldID = -1) : base(configs, name == null ? DEFAULT_NAME : name, worldID) { }
         void IInjectionUnit.InitInjectionNode(InjectionGraph nodes) { nodes.AddNode(this); }
     }
 }
diff --git a/src/EcsWorld.cs b/src/EcsWorld.cs
index 6ed6fe3..a07e9ab 100644
--- a/src/EcsWorld.cs
+++ b/src/EcsWorld.cs
@@ -257,6 +257,38 @@ namespace DCFApixels.DragonECS
         {
             return Get<AspectCache<TAspect>>().Instance;
         }
+        public void GetAspects<TAspect0>(out TAspect0 a0)
+            where TAspect0 : new()
+        {
+            a0 = GetAspect<TAspect0>();
+        }
+        public void GetAspects<TAspect0, TAspect1>(out TAspect0 a0, out TAspect1 a1)
+            where TAspect0 : new()
+            where TAspect1 : new()
+        {
+            a0 = GetAspect<TAspect0>();
+            a1 = GetAspect<TAspect1>();
+        }
+        public void GetAspects<TAspect0, TAspect1, TAspect2>(out TAspect0 a0, out TAspect1 a1, out TAspect2 a2)
+            where TAspect0 : new()
+            where TAspect1 : new()
+            where TAspect2 : new()
+        {
+            a0 = GetAspect<TAspect0>();
+            a1 = GetAspect<TAspect1>();
+            a2 = GetAspect<TAspect2>();
+        }
+        public void GetAspects<TAspect0, TAspect1, TAspect2, TAspect3>(out TAspect0 a0, out TAspect1 a1, out TAspect2 a2, out TAspect3 a3)
+            where TAspect0 : new()
+            where TAspect1 : new()
+            where TAspect2 : new()
+            where TAspect3 : new()
+        {
+            a0 = GetAspect<TAspect0>();
+            a1 = GetAspect<TAspect1>();
+            a2 = GetAspect<TAspect2>();
+            a3 = GetAspect<TAspect3>();
+        }
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public TAspect GetAspect<TAspect>(out EcsMask mask) where TAspect : new()
         {
@@ -1185,6 +1217,7 @@ namespace DCFApixels.DragonECS
         {
             private EcsWorld _world;
             private List<MaskQueryExecutor> _queries;
+            public string Name { get { return _world.Name; } }
             public EntitySlotInfo[] Entities
             {
                 get
diff --git a/src/Executors/EcsWhereToGroupExecutor.cs b/src/Executors/EcsWhereToGroupExecutor.cs
index 7765503..8d57c6e 100644
--- a/src/Executors/EcsWhereToGroupExecutor.cs
+++ b/src/Executors/EcsWhereToGroupExecutor.cs
@@ -68,6 +68,24 @@ namespace DCFApixels.DragonECS.Internal
             {
                 _version++;
                 _iterator.IterateTo(World.Entities, _filteredAllGroup);
+#if DEBUG && DRAGONECS_DEEP_DEBUG
+                if(_filteredGroup == null)
+                {
+                    _filteredGroup = EcsGroup.New(World);
+                }
+                _filteredGroup.Clear();
+                foreach (var e in World.Entities)
+                {
+                    if(World.IsMatchesMask(Mask, e))
+                    {
+                        _filteredGroup.Add(e);
+                    }
+                }
+                if(_filteredAllGroup.SetEquals(_filteredGroup) == false)
+                {
+                    throw new System.InvalidOperationException();
+                }
+#endif
             }
         }
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
diff --git a/src/Executors/MaskQueryExecutor.cs b/src/Executors/MaskQueryExecutor.cs
index de96a69..849b8ed 100644
--- a/src/Executors/MaskQueryExecutor.cs
+++ b/src/Executors/MaskQueryExecutor.cs
@@ -158,17 +158,17 @@ namespace DCFApixels.DragonECS.Core
         {
             *_versions = _world.Version;
 
-            long* ptr = _versions;
+            long* versionsPtr = _versions;
             var slots = _world._poolSlots;
             foreach (var slotIndex in _maskInc)
             {
-                ptr++;
-                *ptr = slots[slotIndex].version;
+                versionsPtr++;
+                *versionsPtr = slots[slotIndex].version;
             }
             foreach (var slotIndex in _maskExc)
             {
-                ptr++;
-                *ptr = slots[slotIndex].version;
+                versionsPtr++;
+                *versionsPtr = slots[slotIndex].version;
             }
         }
         public bool CheckAndNext()
@@ -179,26 +179,28 @@ namespace DCFApixels.DragonECS.Core
             }
             *_versions = _world.Version;
 
-            long* ptr = _versions;
+            long* versionsPtr = _versions;
             var slots = _world._poolSlots;
             bool result = _count != 1;
             foreach (var slotIndex in _maskInc)
             {
-                ptr++;
-                if (*ptr != slots[slotIndex].version)
+                versionsPtr++;
+                if (*versionsPtr != slots[slotIndex].version)
                 {
                     result = false;
-                    *ptr = slots[slotIndex].version;
+                    *versionsPtr = slots[slotIndex].version;
                 }
             }
             foreach (var slotIndex in _maskExc)
             {
-                ptr++;
-                if (*ptr != slots[slotIndex].version)
-                {
-                    result = false;
-                    *ptr = slots[slotIndex].version;
-                }
+                return false; //TODO hotfix, не правильная логика проверки версия для EXC, потому сейчас она скипается
+                
+                //versionsPtr++;
+                //if (*versionsPtr != slots[slotIndex].version)
+                //{
+                //    result = false;
+                //    *versionsPtr = slots[slotIndex].version;
+                //}
             }
             return result;
         }