diff --git a/core/assets/maps/frontier.msav b/core/assets/maps/frontier.msav
index abb69d11b8..819d77e5ac 100644
Binary files a/core/assets/maps/frontier.msav and b/core/assets/maps/frontier.msav differ
diff --git a/core/assets/maps/overgrowth.msav b/core/assets/maps/overgrowth.msav
index e13fd71bf5..7abed66b1c 100644
Binary files a/core/assets/maps/overgrowth.msav and b/core/assets/maps/overgrowth.msav differ
diff --git a/core/src/mindustry/content/SectorPresets.java b/core/src/mindustry/content/SectorPresets.java
index 5a63ab2995..baaa86ad33 100644
--- a/core/src/mindustry/content/SectorPresets.java
+++ b/core/src/mindustry/content/SectorPresets.java
@@ -106,10 +106,9 @@ public class SectorPresets{
             difficulty = 8;
         }};
 
-        //TODO: removed for now
-        //frontier = new SectorPreset("frontier", serpulo, 203){{
-        //    difficulty = 4;
-        //}};
+        frontier = new SectorPreset("frontier", serpulo, 50){{
+            difficulty = 4;
+        }};
 
         fungalPass = new SectorPreset("fungalPass", serpulo, 21){{
             difficulty = 4;
diff --git a/core/src/mindustry/content/SerpuloTechTree.java b/core/src/mindustry/content/SerpuloTechTree.java
index a056ee1b53..373847c95e 100644
--- a/core/src/mindustry/content/SerpuloTechTree.java
+++ b/core/src/mindustry/content/SerpuloTechTree.java
@@ -462,30 +462,41 @@ public class SerpuloTechTree{
                         new SectorComplete(stainedMountains),
                         new Research(groundFactory)
                         ), () -> {
-                            node(overgrowth, Seq.with(
-                            new SectorComplete(craters),
+                            node(frontier, Seq.with(
+                            new SectorComplete(biomassFacility),
                             new SectorComplete(fungalPass),
-                            new Research(cultivator),
-                            new Research(sporePress),
+                            new Research(groundFactory),
+                            new Research(airFactory),
                             new Research(additiveReconstructor),
-                            new Research(UnitTypes.mace),
-                            new Research(UnitTypes.flare)
+                            new Research(mace),
+                            new Research(mono)
                             ), () -> {
-                                node(mycelialBastion, Seq.with(
-                                new Research(atrax),
-                                new Research(spiroct),
-                                new Research(multiplicativeReconstructor),
-                                new Research(exponentialReconstructor)
-                                ), () -> {
-
-                                });
-
-                                node(atolls, Seq.with(
+                                node(overgrowth, Seq.with(
+                                new SectorComplete(frontier),
                                 new SectorComplete(windsweptIslands),
-                                new Research(multiplicativeReconstructor),
-                                new Research(mega)
+                                new Research(ripple),
+                                new Research(salvo),
+                                new Research(crawler),
+                                new Research(atrax),
+                                new Research(cultivator),
+                                new Research(sporePress)
                                 ), () -> {
+                                    node(mycelialBastion, Seq.with(
+                                    new Research(atrax),
+                                    new Research(spiroct),
+                                    new Research(multiplicativeReconstructor),
+                                    new Research(exponentialReconstructor)
+                                    ), () -> {
 
+                                    });
+
+                                    node(atolls, Seq.with(
+                                    new SectorComplete(windsweptIslands),
+                                    new Research(multiplicativeReconstructor),
+                                    new Research(mega)
+                                    ), () -> {
+
+                                    });
                                 });
                             });
 
@@ -499,17 +510,6 @@ public class SerpuloTechTree{
                             });
                         });
 
-                        /*
-                        node(frontier, Seq.with(
-                        new Research(groundFactory),
-                        new Research(airFactory),
-                        new Research(thermalGenerator),
-                        new Research(dagger),
-                        new Research(mono)
-                        ), () -> {
-
-                        });*/
-
                         node(ruinousShores, Seq.with(
                         new SectorComplete(craters),
                         new Research(graphitePress),
@@ -525,6 +525,7 @@ public class SerpuloTechTree{
                             ), () -> {
                                 node(seaPort, Seq.with(
                                 new SectorComplete(biomassFacility),
+                                new SectorComplete(frontier),
                                 new SectorComplete(fungalPass),
                                 new Research(navalFactory),
                                 new Research(risso),
@@ -637,6 +638,7 @@ public class SerpuloTechTree{
                                 node(saltFlats, Seq.with(
                                 new SectorComplete(windsweptIslands),
                                 new SectorComplete(fungalPass),
+                                new SectorComplete(frontier),
                                 new Research(groundFactory),
                                 new Research(additiveReconstructor),
                                 new Research(airFactory),
@@ -701,6 +703,7 @@ public class SerpuloTechTree{
                         //TODO bad order
                             node(infestedCanyons, Seq.with(
                             new SectorComplete(fungalPass),
+                            new SectorComplete(frontier),
                             new Research(navalFactory),
                             new Research(risso),
                             new Research(minke),
diff --git a/core/src/mindustry/logic/GlobalVars.java b/core/src/mindustry/logic/GlobalVars.java
index 732c870983..8ad79b5c0f 100644
--- a/core/src/mindustry/logic/GlobalVars.java
+++ b/core/src/mindustry/logic/GlobalVars.java
@@ -74,7 +74,7 @@ public class GlobalVars{
 
         varMapW = putEntry("@mapw", 0);
         varMapH = putEntry("@maph", 0);
-        varWait = putEntry("@wait", null);
+        varWait = put("@wait", null, true, true);
 
         putEntryOnly("sectionNetwork");