diff --git a/src/EcsWorld.static.cs b/src/EcsWorld.static.cs
index 9d3b3f9..a2aa691 100644
--- a/src/EcsWorld.static.cs
+++ b/src/EcsWorld.static.cs
@@ -45,10 +45,15 @@ namespace DCFApixels.DragonECS
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static bool TryGetWorld(short worldID, out EcsWorld world)
         {// ts
+            if(worldID >= _worlds.Length)
+            {
+                world = null;
+                return false;
+            }
             world = _worlds[worldID];
             return
                 world != null &&
-                world.IsDestroyed != false &&
+                world.IsDestroyed == false &&
                 worldID != 0;
         }
 
diff --git a/src/entlong.cs b/src/entlong.cs
index 9b25a94..7458d31 100644
--- a/src/entlong.cs
+++ b/src/entlong.cs
@@ -464,6 +464,8 @@ namespace DCFApixels.DragonECS
                 a.gen != b.gen ||
                 a.world != b.world;
         }
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static explicit operator EntitySlotInfo(entlong a) { return new EntitySlotInfo(a._full); }
         #endregion
 
         #region Other