diff --git a/core/src/mindustry/core/GameState.java b/core/src/mindustry/core/GameState.java
index b4b753db0c..ce9154c39e 100644
--- a/core/src/mindustry/core/GameState.java
+++ b/core/src/mindustry/core/GameState.java
@@ -38,7 +38,7 @@ public class GameState{
 
     /** Note that being in a campaign does not necessarily mean having a sector. */
     public boolean isCampaign(){
-        return rules.sector != null || rules.satellite != null;
+        return rules.sector != null || rules.region != null;
     }
 
     public boolean hasSector(){
diff --git a/core/src/mindustry/game/GlobalData.java b/core/src/mindustry/game/GlobalData.java
index 0e72ef7245..7900f912f0 100644
--- a/core/src/mindustry/game/GlobalData.java
+++ b/core/src/mindustry/game/GlobalData.java
@@ -3,6 +3,7 @@ package mindustry.game;
 import arc.*;
 import arc.struct.*;
 import arc.files.*;
+import arc.util.ArcAnnotate.*;
 import arc.util.io.*;
 import mindustry.*;
 import mindustry.content.*;
@@ -19,6 +20,8 @@ import static mindustry.Vars.*;
 public class GlobalData{
     private ObjectMap<ContentType, ObjectSet<String>> unlocked = new ObjectMap<>();
     private ObjectIntMap<Item> items = new ObjectIntMap<>();
+    private Array<Satellite> satellites = new Array<>();
+    private ObjectMap<String, MapRegion> regions = new ObjectMap<>();
     private boolean modified;
 
     public GlobalData(){
@@ -35,6 +38,10 @@ public class GlobalData{
         });
     }
 
+    public @Nullable MapRegion getRegion(String name){
+        return regions.get(name);
+    }
+
     public void exportData(Fi file) throws IOException{
         Array<Fi> files = new Array<>();
         files.add(Core.settings.getSettingsFile());
diff --git a/core/src/mindustry/game/MapRegion.java b/core/src/mindustry/game/MapRegion.java
new file mode 100644
index 0000000000..8a6908b216
--- /dev/null
+++ b/core/src/mindustry/game/MapRegion.java
@@ -0,0 +1,12 @@
+package mindustry.game;
+
+/** Defines a special map that can be visited, loaded, and saved. */
+public abstract class MapRegion{
+
+    /** Name of the region. Used for lookup and save names. */
+    public abstract String name();
+
+    public void load(){
+
+    }
+}
diff --git a/core/src/mindustry/game/Rules.java b/core/src/mindustry/game/Rules.java
index d657d5bfde..e93c4a55d3 100644
--- a/core/src/mindustry/game/Rules.java
+++ b/core/src/mindustry/game/Rules.java
@@ -59,8 +59,8 @@ public class Rules{
     public float launchWaveMultiplier = 2f;
     /** Sector for saves that have them.*/
     public @Nullable Sector sector;
-    /** Satellite that save is on. Indicates campaign.  */
-    public @Nullable Satellite satellite;
+    /** Region that save is on. Indicates campaign.  */
+    public @Nullable MapRegion region;
     /** Spawn layout. */
     public Array<SpawnGroup> spawns = new Array<>();
     /** Determines if there should be limited respawns. */