diff --git a/core/src/mindustry/content/Planets.java b/core/src/mindustry/content/Planets.java
index 5cc164ca77..51e5edb4be 100644
--- a/core/src/mindustry/content/Planets.java
+++ b/core/src/mindustry/content/Planets.java
@@ -63,6 +63,7 @@ public class Planets{
             lightSrcTo = 0.5f;
             lightDstFrom = 0.2f;
             clearSectorOnLose = true;
+            defaultCore = Blocks.coreBastion;
             hiddenItems.addAll(Items.serpuloItems).removeAll(Items.erekirItems);
 
             //TODO SHOULD there be lighting?
diff --git a/core/src/mindustry/core/Control.java b/core/src/mindustry/core/Control.java
index 38152d2e4f..ad4cd9d365 100644
--- a/core/src/mindustry/core/Control.java
+++ b/core/src/mindustry/core/Control.java
@@ -420,7 +420,7 @@ public class Control implements ApplicationListener, Loadable{
 
                             //set spawn for sector damage to use
                             Tile spawn = world.tile(sector.info.spawnPosition);
-                            spawn.setBlock(Blocks.coreShard, state.rules.defaultTeam);
+                            spawn.setBlock(sector.planet.defaultCore, state.rules.defaultTeam);
 
                             //add extra damage.
                             SectorDamage.apply(1f);
diff --git a/core/src/mindustry/type/Planet.java b/core/src/mindustry/type/Planet.java
index 88f61960e7..4ecb8fc586 100644
--- a/core/src/mindustry/type/Planet.java
+++ b/core/src/mindustry/type/Planet.java
@@ -9,6 +9,7 @@ import arc.math.geom.*;
 import arc.struct.*;
 import arc.util.*;
 import arc.util.noise.*;
+import mindustry.content.*;
 import mindustry.content.TechTree.*;
 import mindustry.ctype.*;
 import mindustry.game.*;
@@ -16,6 +17,7 @@ import mindustry.graphics.*;
 import mindustry.graphics.g3d.*;
 import mindustry.graphics.g3d.PlanetGrid.*;
 import mindustry.maps.generators.*;
+import mindustry.world.*;
 import mindustry.world.meta.*;
 
 import static mindustry.Vars.*;
@@ -105,6 +107,8 @@ public class Planet extends UnlockableContent{
     public boolean prebuildBase = true;
     /** If true, waves are created on sector loss. TODO remove. */
     public boolean allowWaves = false;
+    /** Default core block for launching. */
+    public Block defaultCore = Blocks.coreShard;
     /** Sets up rules on game load for any sector on this planet. */
     public Cons<Rules> ruleSetter = r -> {};
     /** Parent body that this planet orbits around. If null, this planet is considered to be in the middle of the solar system.*/
diff --git a/core/src/mindustry/ui/dialogs/PlanetDialog.java b/core/src/mindustry/ui/dialogs/PlanetDialog.java
index 9dfb0c1332..8835f123aa 100644
--- a/core/src/mindustry/ui/dialogs/PlanetDialog.java
+++ b/core/src/mindustry/ui/dialogs/PlanetDialog.java
@@ -340,7 +340,7 @@ public class PlanetDialog extends BaseDialog implements PlanetInterfaceRenderer{
     }
 
     Sector findLauncher(Sector to){
-        Sector launchSector = this.launchSector != null && this.launchSector.hasBase() ? this.launchSector : null;
+        Sector launchSector = this.launchSector != null && this.launchSector.planet == to.planet && this.launchSector.hasBase() ? this.launchSector : null;
         //directly nearby.
         if(to.near().contains(launchSector)) return launchSector;
 
@@ -1153,13 +1153,14 @@ public class PlanetDialog extends BaseDialog implements PlanetInterfaceRenderer{
         if(mode == look && !sector.hasBase()){
             shouldHide = false;
             Sector from = findLauncher(sector);
+
             if(from == null){
                 //clear loadout information, so only the basic loadout gets used
                 universe.clearLoadoutInfo();
                 //free launch.
                 control.playSector(sector);
             }else{
-                CoreBlock block = from.info.bestCoreType instanceof CoreBlock b ? b : (CoreBlock)Blocks.coreShard;
+                CoreBlock block = from.planet.allowLaunchSchematics ? (from.info.bestCoreType instanceof CoreBlock b ? b : (CoreBlock)from.planet.defaultCore) : (CoreBlock)from.planet.defaultCore;
 
                 loadouts.show(block, from, sector, () -> {
                     var schemCore = universe.getLastLoadout().findCore();