diff --git a/src/EcsSubject.cs b/src/EcsSubject.cs
index fd1b1d1..2032aa5 100644
--- a/src/EcsSubject.cs
+++ b/src/EcsSubject.cs
@@ -108,6 +108,11 @@ namespace DCFApixels.DragonECS
             }
             #endregion
 
+            public EcsWorldCmp<T> GetWorldData<T>() where T : struct
+            {
+                return new EcsWorldCmp<T>(_world.id);
+            }
+
             private void End(out EcsMask mask)
             {
                 HashSet<int> maskInc;
diff --git a/src/EcsWorld.cs b/src/EcsWorld.cs
index 475e986..0a4b5f9 100644
--- a/src/EcsWorld.cs
+++ b/src/EcsWorld.cs
@@ -9,12 +9,12 @@ using System.Runtime.InteropServices;
 namespace DCFApixels.DragonECS
 {
     [StructLayout(LayoutKind.Sequential, Pack = 4, Size = 4)]
-    public struct EcsWorldDataRef<T> where T : struct
+    public struct EcsWorldCmp<T> where T : struct
     {
         private int _worldID;
-        public EcsWorldDataRef(int worldID) => _worldID = worldID;
+        public EcsWorldCmp(int worldID) => _worldID = worldID;
         public EcsWorld World => EcsWorld.GetWorld(_worldID);
-        public ref T Inst => ref EcsWorld.GetData<T>(_worldID);
+        public ref T Value => ref EcsWorld.GetData<T>(_worldID);
     }
     public abstract partial class EcsWorld
     {
@@ -22,12 +22,11 @@ namespace DCFApixels.DragonECS
         private const short DEATH_GEN_BIT = short.MinValue;
         private const int DEL_ENT_BUFFER_SIZE_OFFSET = 2;
 
-        internal static EcsWorld[] Worlds = new EcsWorld[4];
+        private static EcsWorld[] Worlds = new EcsWorld[4];
         private static IntDispenser _worldIdDispenser = new IntDispenser(0);
 
         private static List<DataReleaser> _dataReleaseres = new List<DataReleaser>();
 
-
         static EcsWorld()
         {
             Worlds[0] = new EcsNullWorld();
diff --git a/src/entlong.cs b/src/entlong.cs
index 76c7c4d..904db21 100644
--- a/src/entlong.cs
+++ b/src/entlong.cs
@@ -28,7 +28,7 @@ namespace DCFApixels.DragonECS
         public bool IsAlive
         {
             [MethodImpl(MethodImplOptions.AggressiveInlining)]
-            get => EcsWorld.Worlds[world].IsAlive(id, gen);
+            get => EcsWorld.GetWorld(world).IsAlive(id, gen);
         }
         public bool IsNull
         {
@@ -65,7 +65,7 @@ namespace DCFApixels.DragonECS
 #if (DEBUG && !DISABLE_DEBUG) || ENABLE_DRAGONECS_ASSERT_CHEKS
                 if (!IsAlive) ThrowIsNotAlive(this);
 #endif
-                return EcsWorld.Worlds[world];
+                return EcsWorld.GetWorld(world);
             }
         }
         public short WorldID
@@ -104,12 +104,12 @@ namespace DCFApixels.DragonECS
         }
         public bool TryGetWorld(out EcsWorld world)
         {
-            world = EcsWorld.Worlds[this.world];
+            world = EcsWorld.GetWorld(this.world);
             return IsAlive;
         }
         public bool TryUnpack(out EcsWorld world, out int id)
         {
-            world = EcsWorld.Worlds[this.world];
+            world = EcsWorld.GetWorld(this.world);
             id = this.id;
             return IsAlive;
         }