diff --git a/core/assets/maps/frozenForest.mmap b/core/assets/maps/frozenForest.mmap
index 273ddcea84..590c82cccf 100644
Binary files a/core/assets/maps/frozenForest.mmap and b/core/assets/maps/frozenForest.mmap differ
diff --git a/core/src/io/anuke/mindustry/core/Control.java b/core/src/io/anuke/mindustry/core/Control.java
index eb7936d6ac..01d6962af4 100644
--- a/core/src/io/anuke/mindustry/core/Control.java
+++ b/core/src/io/anuke/mindustry/core/Control.java
@@ -28,7 +28,9 @@ import io.anuke.mindustry.input.InputHandler;
 import io.anuke.mindustry.input.MobileInput;
 import io.anuke.mindustry.maps.Map;
 import io.anuke.mindustry.net.Net;
+import io.anuke.mindustry.type.Item;
 import io.anuke.mindustry.ui.dialogs.FloatingDialog;
+import io.anuke.mindustry.world.Tile;
 
 import java.io.IOException;
 
@@ -301,6 +303,16 @@ public class Control implements ApplicationListener{
                 input.update();
             }
 
+            if(world.isZone()){
+                for(Tile tile : state.teams.get(players[0].getTeam()).cores){
+                    for(Item item : content.items()){
+                        if(tile.entity.items.has(item)){
+                            data.unlockContent(item);
+                        }
+                    }
+                }
+            }
+
             //autosave global data every second if it's modified
             if(timer.get(1, 60)){
                 data.checkSave();
diff --git a/core/src/io/anuke/mindustry/core/World.java b/core/src/io/anuke/mindustry/core/World.java
index 1e889c78e9..48572dc653 100644
--- a/core/src/io/anuke/mindustry/core/World.java
+++ b/core/src/io/anuke/mindustry/core/World.java
@@ -185,7 +185,7 @@ public class World implements ApplicationListener{
 
         addDarkness(tiles);
 
-        EntityQuery.resizeTree(-finalWorldBounds, -finalWorldBounds, tiles.length * tilesize + finalWorldBounds, tiles[0].length + finalWorldBounds);
+        EntityQuery.resizeTree(-finalWorldBounds, -finalWorldBounds, tiles.length * tilesize + finalWorldBounds, tiles[0].length * tilesize + finalWorldBounds);
 
         generating = false;
         Events.fire(new WorldLoadEvent());
diff --git a/core/src/io/anuke/mindustry/game/GlobalData.java b/core/src/io/anuke/mindustry/game/GlobalData.java
index d8cb461884..a17767175b 100644
--- a/core/src/io/anuke/mindustry/game/GlobalData.java
+++ b/core/src/io/anuke/mindustry/game/GlobalData.java
@@ -94,7 +94,6 @@ public class GlobalData{
             modified = true;
             content.onUnlock();
             Events.fire(new UnlockEvent(content));
-            save();
         }
     }
 
diff --git a/tools/src/io/anuke/mindustry/Generators.java b/tools/src/io/anuke/mindustry/Generators.java
index e97e4f8b4c..0ec0ff1784 100644
--- a/tools/src/io/anuke/mindustry/Generators.java
+++ b/tools/src/io/anuke/mindustry/Generators.java
@@ -63,7 +63,6 @@ public class Generators {
                                         out.draw(x, y, outlineColor);
                                     }
                                 }
-
                             }
                         }