diff --git a/core/src/mindustry/core/Control.java b/core/src/mindustry/core/Control.java
index 5142ca4124..5ef4bad8f3 100644
--- a/core/src/mindustry/core/Control.java
+++ b/core/src/mindustry/core/Control.java
@@ -249,7 +249,7 @@ public class Control implements ApplicationListener, Loadable{
     public void playSector(Sector sector){
         ui.loadAnd(() -> {
             ui.planet.hide();
-            SaveSlot slot = saves.getSectorSave(sector);
+            SaveSlot slot = sector.save;
             //TODO remove for persistent sector slots
             slot = null;
             if(slot != null){
diff --git a/core/src/mindustry/game/Saves.java b/core/src/mindustry/game/Saves.java
index 9cdaf8a61b..7234acfe08 100644
--- a/core/src/mindustry/game/Saves.java
+++ b/core/src/mindustry/game/Saves.java
@@ -56,7 +56,14 @@ public class Saves{
             }
         }
 
-        lastSectorSave = saves.find(s -> s.isSector() && s.getName().equals(Core.settings.getString("last-sector-save", "<<none>>")));
+        lastSectorSave = saves.find(s -> s.isSector() && s.getName().equals(Core.settings.getString("last-sector-save", "<none>")));
+
+        //automatically assign sector save slots
+        for(SaveSlot slot : saves){
+            if(slot.getSector() != null){
+                slot.getSector().save = slot;
+            }
+        }
     }
 
     public @Nullable SaveSlot getLastSector(){
@@ -115,21 +122,15 @@ public class Saves{
         return saveDirectory.child("sector-" + sector.planet.name + "-" + sector.id + "." + saveExtension);
     }
 
-    public @Nullable SaveSlot getSectorSave(Sector sector){
-        Fi fi = getSectorFile(sector);
-        return saves.find(s -> s.isSector() && s.file.equals(fi));
-    }
-
     public void saveSector(Sector sector){
-        SaveSlot slot = getSectorSave(sector);
-        if(slot == null){
-            slot = new SaveSlot(getSectorFile(sector));
-            slot.setName(slot.file.nameWithoutExtension());
-            saves.add(slot);
+        if(sector.save == null){
+            sector.save = new SaveSlot(getSectorFile(sector));
+            sector.save.setName(sector.save.file.nameWithoutExtension());
+            saves.add(sector.save);
         }
-        slot.save();
-        lastSectorSave = slot;
-        Core.settings.putSave("last-sector-save", slot.getName());
+        sector.save.save();
+        lastSectorSave = sector.save;
+        Core.settings.putSave("last-sector-save", sector.save.getName());
     }
 
     public SaveSlot addSave(String name){
diff --git a/core/src/mindustry/graphics/PlanetMesh.java b/core/src/mindustry/graphics/PlanetMesh.java
index 43bbd4b577..1f1c883536 100644
--- a/core/src/mindustry/graphics/PlanetMesh.java
+++ b/core/src/mindustry/graphics/PlanetMesh.java
@@ -4,7 +4,6 @@ import arc.graphics.*;
 import arc.graphics.VertexAttributes.*;
 import arc.graphics.gl.*;
 import arc.math.geom.*;
-import arc.math3d.*;
 import arc.util.ArcAnnotate.*;
 import arc.util.*;
 import mindustry.graphics.PlanetGrid.*;
diff --git a/core/src/mindustry/type/Planet.java b/core/src/mindustry/type/Planet.java
index 8616d8e0fa..04062478a8 100644
--- a/core/src/mindustry/type/Planet.java
+++ b/core/src/mindustry/type/Planet.java
@@ -2,7 +2,6 @@ package mindustry.type;
 
 import arc.files.*;
 import arc.math.geom.*;
-import arc.math3d.*;
 import arc.scene.ui.layout.*;
 import arc.struct.*;
 import arc.util.ArcAnnotate.*;
diff --git a/core/src/mindustry/type/Sector.java b/core/src/mindustry/type/Sector.java
index a7e78a45c0..33625dd614 100644
--- a/core/src/mindustry/type/Sector.java
+++ b/core/src/mindustry/type/Sector.java
@@ -1,7 +1,6 @@
 package mindustry.type;
 
 import arc.math.geom.*;
-import arc.math3d.*;
 import arc.util.*;
 import arc.util.ArcAnnotate.*;
 import arc.util.io.*;
@@ -20,6 +19,9 @@ public class Sector{
     public final int id;
 
     public final SectorData data;
+
+    public @Nullable SaveSlot save;
+
     //TODO implement a dynamic (?) launch period
     public int launchPeriod = 10;
 
@@ -36,10 +38,6 @@ public class Sector{
         return (int)(rect.radius * 3200);
     }
 
-    public @Nullable SaveSlot getSave(){
-        return Vars.headless ? null : Vars.control.saves.getSectorSave(this);
-    }
-
     //TODO implement
     public boolean isLaunchWave(int wave){
         return metCondition() && wave % launchPeriod == 0;
diff --git a/core/src/mindustry/ui/dialogs/PlanetDialog.java b/core/src/mindustry/ui/dialogs/PlanetDialog.java
index 4162ddf7ef..b4a201e9d8 100644
--- a/core/src/mindustry/ui/dialogs/PlanetDialog.java
+++ b/core/src/mindustry/ui/dialogs/PlanetDialog.java
@@ -22,9 +22,9 @@ import mindustry.ui.*;
 import static mindustry.Vars.*;
 
 public class PlanetDialog extends FloatingDialog{
-    private static final Color outlineColor = Pal.accent.cpy().a(0.6f);
-    private static final float camLength = 4f, outlineRad = 1.15f;
-    private static final boolean drawRect = false;
+    private static final Color outlineColor = Pal.accent.cpy().a(0.6f), shadowColor = new Color(0, 0, 0, 0.7f);
+    private static final float camLength = 4f;
+    float outlineRad = 1.15f;
 
     private final PlanetMesh[] outlines = new PlanetMesh[10];
     private final Camera3D cam = new Camera3D();
@@ -112,6 +112,9 @@ public class PlanetDialog extends FloatingDialog{
         Gl.clear(Gl.depthBufferBit);
         Gl.enable(Gl.depthTest);
 
+        Gl.enable(Gl.cullFace);
+        Gl.cullFace(Gl.back);
+
         //lock to up vector so it doesn't get confusing
         cam.up.set(Vec3.Y);
 
@@ -127,8 +130,14 @@ public class PlanetDialog extends FloatingDialog{
         planet.mesh.render(cam.combined());
         outline.render(cam.combined());
 
+        for(Sector sec : planet.sectors){
+            if(sec.save == null){
+                draw(sec, shadowColor, -0.001f);
+            }
+        }
+
         if(hovered != null){
-            drawHover(hovered);
+            draw(hovered, outlineColor, 0.001f);
 
             //if(Core.input.keyTap(KeyCode.SPACE)){
             //    control.playSector(hovered);
@@ -140,6 +149,8 @@ public class PlanetDialog extends FloatingDialog{
             drawSelection(selected);
         }
 
+        batch.flush(Gl.triangles);
+
         Draw.batch(projector, () -> {
             if(hovered != null){
                 setPlane(hovered);
@@ -169,7 +180,7 @@ public class PlanetDialog extends FloatingDialog{
 
         stable.add("[accent]" + selected.id).row();
         stable.addImage().color(Pal.accent).fillX().height(3f).pad(3f).row();
-        stable.add(selected.getSave() != null ? selected.getSave().getPlayTime() : "[lightgray]Unexplored").row();
+        stable.add(selected.save != null ? selected.save.getPlayTime() : "[lightgray]Unexplored").row();
 
         stable.add("Resources:").row();
         stable.table(t -> {
@@ -202,29 +213,29 @@ public class PlanetDialog extends FloatingDialog{
         );
     }
 
-    private void drawHover(Sector sector){
-        for(Corner c : sector.tile.corners){
-            batch.color(outlineColor);
-            batch.vertex(c.v);
+    private void draw(Sector sector, Color color, float offset){
+        float rr = outlineRad + offset;
+        for(int i = 0; i < sector.tile.corners.length; i++){
+            Corner c = sector.tile.corners[i], next = sector.tile.corners[(i+1) % sector.tile.corners.length];
+            batch.tri(Tmp.v31.set(c.v).setLength(rr), Tmp.v32.set(next.v).setLength(rr), Tmp.v33.set(sector.tile.v).setLength(rr), color);
         }
-        batch.flush(Gl.triangleFan);
     }
 
     private void drawSelection(Sector sector){
         float length = 0.1f;
+        float arad = outlineRad + 0.0001f;
 
         for(int i = 0; i < sector.tile.corners.length; i++){
             Corner next = sector.tile.corners[(i + 1) % sector.tile.corners.length];
             Corner curr = sector.tile.corners[i];
-            sector.tile.v.scl(outlineRad);
+            sector.tile.v.scl(arad);
             Tmp.v31.set(curr.v).sub(sector.tile.v).setLength(length).add(sector.tile.v);
             Tmp.v32.set(next.v).sub(sector.tile.v).setLength(length).add(sector.tile.v);
-            sector.tile.v.scl(1f / outlineRad);
+            sector.tile.v.scl(1f / arad);
 
             batch.tri(curr.v, next.v, Tmp.v31, Pal.accent);
-            batch.tri(Tmp.v31, Tmp.v32, next.v, Pal.accent);
+            batch.tri(Tmp.v31, next.v, Tmp.v32, Pal.accent);
         }
-        batch.flush(Gl.triangles);
     }
 
     private PlanetMesh outline(int size){
diff --git a/gradle.properties b/gradle.properties
index c14da3278b..4a26a2fcbf 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,3 +1,3 @@
 org.gradle.daemon=true
 org.gradle.jvmargs=-Xms256m -Xmx1024m
-archash=c6cf22b91f58e7f050574885e18d2b1d9640563f
+archash=7dd0965f3ca6684d3bd78b821c5a69e8922fa71b