diff --git a/core/src/mindustry/core/Logic.java b/core/src/mindustry/core/Logic.java
index 34626b9b7a..c3dd4654f8 100644
--- a/core/src/mindustry/core/Logic.java
+++ b/core/src/mindustry/core/Logic.java
@@ -435,6 +435,22 @@ public class Logic implements ApplicationListener{
                     }
                 }
 
+                //TODO objectives clientside???
+
+                //update objectives; do not get completed clientside
+                if(state.rules.objectives.size > 0){
+                    var first = state.rules.objectives.first();
+                    first.update();
+                    if(!net.client() && first.complete()){
+                        state.rules.objectives.remove(0);
+
+                        //TODO call packet for this?
+                        if(net.server()){
+                            Call.setRules(state.rules);
+                        }
+                    }
+                }
+
                 if(state.rules.waves && state.rules.waveTimer && !state.gameOver){
                     if(!isWaitingWave()){
                         state.wavetime = Math.max(state.wavetime - Time.delta, 0);
diff --git a/core/src/mindustry/game/MapObjectives.java b/core/src/mindustry/game/MapObjectives.java
new file mode 100644
index 0000000000..28acfaa58d
--- /dev/null
+++ b/core/src/mindustry/game/MapObjectives.java
@@ -0,0 +1,29 @@
+package mindustry.game;
+
+import arc.func.*;
+import arc.struct.*;
+import arc.util.*;
+
+public class MapObjectives{
+    public static Seq<Prov<MapObjective>> allObjectiveTypes = Seq.with();
+
+    public abstract class MapObjective{
+
+        public boolean complete(){
+            return false;
+        }
+
+        public void update(){
+
+        }
+
+        /** Reset internal state, if any. */
+        public void reset(){
+
+        }
+
+        public @Nullable String details(){
+            return null;
+        }
+    }
+}
diff --git a/core/src/mindustry/game/Rules.java b/core/src/mindustry/game/Rules.java
index 21c485f9f0..bb2ee57634 100644
--- a/core/src/mindustry/game/Rules.java
+++ b/core/src/mindustry/game/Rules.java
@@ -6,6 +6,7 @@ import arc.util.*;
 import arc.util.serialization.*;
 import arc.util.serialization.Json.*;
 import mindustry.content.*;
+import mindustry.game.MapObjectives.*;
 import mindustry.graphics.g3d.*;
 import mindustry.io.*;
 import mindustry.type.*;
@@ -115,6 +116,8 @@ public class Rules{
     public ObjectSet<String> researched = new ObjectSet<>();
     /** Block containing these items as requirements are hidden. */
     public ObjectSet<Item> hiddenBuildItems = Items.erekirOnlyItems.asSet();
+    /** Campaign-only map objectives. */
+    public Seq<MapObjective> objectives = new Seq<>();
     /** HIGHLY UNSTABLE/EXPERIMENTAL. DO NOT USE THIS. */
     public boolean fog = false;
     /** If fog = true, this is whether static (black) fog is enabled. */
diff --git a/core/src/mindustry/io/JsonIO.java b/core/src/mindustry/io/JsonIO.java
index 8cc9119fcc..a65d7d82ad 100644
--- a/core/src/mindustry/io/JsonIO.java
+++ b/core/src/mindustry/io/JsonIO.java
@@ -242,6 +242,12 @@ public class JsonIO{
             var i = filter.get();
             json.addClassTag(Strings.camelize(i.getClass().getSimpleName().replace("Filter", "")), i.getClass());
         }
+
+        //use short names for all objective types
+        for(var obj : MapObjectives.allObjectiveTypes){
+            var i = obj.get();
+            json.addClassTag(Strings.camelize(i.getClass().getSimpleName().replace("Objective", "")), i.getClass());
+        }
     }
 
     static class CustomJson extends Json{
diff --git a/core/src/mindustry/logic/LExecutor.java b/core/src/mindustry/logic/LExecutor.java
index a934971aa7..eec07afc33 100644
--- a/core/src/mindustry/logic/LExecutor.java
+++ b/core/src/mindustry/logic/LExecutor.java
@@ -40,7 +40,7 @@ public class LExecutor{
     public static final int
     maxGraphicsBuffer = 256,
     maxDisplayBuffer = 1024,
-    maxTextBuffer = 256;
+    maxTextBuffer = 400;
 
     public LInstruction[] instructions = {};
     public Var[] vars = {};