diff --git a/core/assets/bundles/bundle.properties b/core/assets/bundles/bundle.properties
index 4ce05d5e0f..a59e2fff42 100644
--- a/core/assets/bundles/bundle.properties
+++ b/core/assets/bundles/bundle.properties
@@ -463,7 +463,7 @@ load = Load
 save = Save
 fps = FPS: {0}
 ping = Ping: {0}ms
-language.restart = Please restart your game for the language settings to take effect.
+language.restart = Restart your game for the language settings to take effect.
 settings = Settings
 tutorial = Tutorial
 tutorial.retake = Re-Take Tutorial
diff --git a/core/src/mindustry/Vars.java b/core/src/mindustry/Vars.java
index dfd2984e75..e0902201a8 100644
--- a/core/src/mindustry/Vars.java
+++ b/core/src/mindustry/Vars.java
@@ -187,7 +187,7 @@ public class Vars implements Loadable{
     public static ContentLoader content;
     public static GameState state;
     public static EntityCollisions collisions;
-    public static DefaultWaves defaultWaves;
+    public static Waves waves;
     public static LoopControl loops;
     public static Platform platform = new Platform(){};
     public static Mods mods;
@@ -256,7 +256,7 @@ public class Vars implements Loadable{
 
         content = new ContentLoader();
         loops = new LoopControl();
-        defaultWaves = new DefaultWaves();
+        waves = new Waves();
         collisions = new EntityCollisions();
         world = new World();
         universe = new Universe();
diff --git a/core/src/mindustry/editor/WaveInfoDialog.java b/core/src/mindustry/editor/WaveInfoDialog.java
index a374613b24..a98d03a923 100644
--- a/core/src/mindustry/editor/WaveInfoDialog.java
+++ b/core/src/mindustry/editor/WaveInfoDialog.java
@@ -64,7 +64,7 @@ public class WaveInfoDialog extends BaseDialog{
             }).disabled(b -> Core.app.getClipboardText() == null || Core.app.getClipboardText().isEmpty());
             dialog.cont.row();
             dialog.cont.button("@settings.reset", () -> ui.showConfirm("@confirm", "@settings.clear.confirm", () -> {
-                groups = JsonIO.copy(defaultWaves.get());
+                groups = JsonIO.copy(waves.get());
                 buildGroups();
                 dialog.hide();
             }));
@@ -98,7 +98,7 @@ public class WaveInfoDialog extends BaseDialog{
         if(experimental){
             buttons.button("Random", Icon.refresh, () -> {
                 groups.clear();
-                groups = DefaultWaves.generate(1f / 10f);
+                groups = Waves.generate(1f / 10f);
                 updateWaves();
             }).width(200f);
         }
@@ -125,7 +125,7 @@ public class WaveInfoDialog extends BaseDialog{
     }
 
     void setup(){
-        groups = JsonIO.copy(state.rules.spawns.isEmpty() ? defaultWaves.get() : state.rules.spawns);
+        groups = JsonIO.copy(state.rules.spawns.isEmpty() ? waves.get() : state.rules.spawns);
 
         cont.clear();
         cont.stack(new Table(Tex.clear, main -> {
diff --git a/core/src/mindustry/game/Schematics.java b/core/src/mindustry/game/Schematics.java
index 44824e3674..0f517ab3fe 100644
--- a/core/src/mindustry/game/Schematics.java
+++ b/core/src/mindustry/game/Schematics.java
@@ -33,6 +33,7 @@ import mindustry.world.blocks.power.*;
 import mindustry.world.blocks.production.*;
 import mindustry.world.blocks.sandbox.*;
 import mindustry.world.blocks.storage.*;
+import mindustry.world.meta.*;
 
 import java.io.*;
 import java.util.zip.*;
@@ -297,7 +298,8 @@ public class Schematics implements Loadable{
         Stile core = s.tiles.find(t -> t.block instanceof CoreBlock);
 
         //make sure a core exists, and that the schematic is small enough.
-        if(core == null || (validate && (s.width > core.block.size + maxLoadoutSchematicPad *2 || s.height > core.block.size + maxLoadoutSchematicPad *2))) return;
+        if(core == null || (validate && (s.width > core.block.size + maxLoadoutSchematicPad *2 || s.height > core.block.size + maxLoadoutSchematicPad *2
+            || s.tiles.contains(t -> t.block.buildVisibility == BuildVisibility.sandboxOnly)))) return;
 
         //place in the cache
         loadouts.get((CoreBlock)core.block, Seq::new).add(s);
diff --git a/core/src/mindustry/game/SectorInfo.java b/core/src/mindustry/game/SectorInfo.java
index 3ef6946424..6b2cd491d6 100644
--- a/core/src/mindustry/game/SectorInfo.java
+++ b/core/src/mindustry/game/SectorInfo.java
@@ -57,6 +57,8 @@ public class SectorInfo{
     public float secondsPassed;
     /** Display name. */
     public @Nullable String name;
+    /** Version of generated waves. When it doesn't match, new waves are generated. */
+    public int waveVersion = -1;
 
     /** Special variables for simulation. */
     public float sumHealth, sumRps, sumDps, waveHealthBase, waveHealthSlope, waveDpsBase, waveDpsSlope;
@@ -118,6 +120,11 @@ public class SectorInfo{
         state.rules.winWave = winWave;
         state.rules.attackMode = attack;
 
+        //assign new wave patterns when the version changes
+        if(waveVersion != Waves.waveVersion && state.rules.sector.preset == null){
+            state.rules.spawns = Waves.generate(state.rules.sector.baseCoverage);
+        }
+
         CoreBuild entity = state.rules.defaultTeam.core();
         if(entity != null){
             entity.items.clear();
@@ -143,6 +150,7 @@ public class SectorInfo{
             spawnPosition = entity.pos();
         }
 
+        waveVersion = Waves.waveVersion;
         waveSpacing = state.rules.waveSpacing;
         wave = state.wave;
         winWave = state.rules.winWave;
diff --git a/core/src/mindustry/game/DefaultWaves.java b/core/src/mindustry/game/Waves.java
similarity index 98%
rename from core/src/mindustry/game/DefaultWaves.java
rename to core/src/mindustry/game/Waves.java
index 48582e0eb2..16d542b393 100644
--- a/core/src/mindustry/game/DefaultWaves.java
+++ b/core/src/mindustry/game/Waves.java
@@ -9,7 +9,9 @@ import mindustry.type.*;
 
 import static mindustry.content.UnitTypes.*;
 
-public class DefaultWaves{
+public class Waves{
+    public static final int waveVersion = 1;
+
     private Seq<SpawnGroup> spawns;
 
     public Seq<SpawnGroup> get(){
@@ -337,7 +339,7 @@ public class DefaultWaves{
             step += (int)(rand.random(15, 30) * Mathf.lerp(1f, 0.5f, difficulty));
         }
 
-        int bossWave = (int)(rand.random(30, 60) * Mathf.lerp(1f, 0.7f, difficulty));
+        int bossWave = (int)(rand.random(50, 70) * Mathf.lerp(1f, 0.6f, difficulty));
         int bossSpacing = (int)(rand.random(25, 40) * Mathf.lerp(1f, 0.6f, difficulty));
 
         //main boss progression
diff --git a/core/src/mindustry/io/SaveVersion.java b/core/src/mindustry/io/SaveVersion.java
index a1e26c9b57..ab243b0823 100644
--- a/core/src/mindustry/io/SaveVersion.java
+++ b/core/src/mindustry/io/SaveVersion.java
@@ -107,7 +107,7 @@ public abstract class SaveVersion extends SaveFileReader{
         state.wavetime = map.getFloat("wavetime", state.rules.waveSpacing);
         state.stats = JsonIO.read(GameStats.class, map.get("stats", "{}"));
         state.rules = JsonIO.read(Rules.class, map.get("rules", "{}"));
-        if(state.rules.spawns.isEmpty()) state.rules.spawns = defaultWaves.get();
+        if(state.rules.spawns.isEmpty()) state.rules.spawns = waves.get();
         lastReadBuild = map.getInt("build", -1);
 
         if(!headless){
diff --git a/core/src/mindustry/maps/Map.java b/core/src/mindustry/maps/Map.java
index 0fdc818139..62d47d9412 100644
--- a/core/src/mindustry/maps/Map.java
+++ b/core/src/mindustry/maps/Map.java
@@ -101,7 +101,7 @@ public class Map implements Comparable<Map>, Publishable{
             //this replacement is a MASSIVE hack but it fixes some incorrect overwriting of team-specific rules.
             //may need to be tweaked later
             Rules result = JsonIO.read(Rules.class, base, tags.get("rules", "{}").replace("teams:{2:{infiniteAmmo:true}},", ""));
-            if(result.spawns.isEmpty()) result.spawns = Vars.defaultWaves.get();
+            if(result.spawns.isEmpty()) result.spawns = Vars.waves.get();
             return result;
         }catch(Exception e){
             //error reading rules. ignore?
diff --git a/core/src/mindustry/maps/planet/SerpuloPlanetGenerator.java b/core/src/mindustry/maps/planet/SerpuloPlanetGenerator.java
index 4c7bd49a4e..4b878d3dd2 100644
--- a/core/src/mindustry/maps/planet/SerpuloPlanetGenerator.java
+++ b/core/src/mindustry/maps/planet/SerpuloPlanetGenerator.java
@@ -420,7 +420,7 @@ public class SerpuloPlanetGenerator extends PlanetGenerator{
         state.rules.waves = sector.info.waves = true;
 
         //TODO better waves
-        state.rules.spawns = DefaultWaves.generate(difficulty);
+        state.rules.spawns = Waves.generate(difficulty);
     }
 
     @Override
diff --git a/core/src/mindustry/mod/ContentParser.java b/core/src/mindustry/mod/ContentParser.java
index 4fdf9a34b0..eb05dc6c6b 100644
--- a/core/src/mindustry/mod/ContentParser.java
+++ b/core/src/mindustry/mod/ContentParser.java
@@ -295,7 +295,7 @@ public class ContentParser{
                         group.type = unit;
                     }
 
-                    Vars.defaultWaves.get().addAll(groups);
+                    Vars.waves.get().addAll(groups);
                 }
 
                 readFields(unit, value, true);
diff --git a/ios/src/mindustry/ios/IOSLauncher.java b/ios/src/mindustry/ios/IOSLauncher.java
index d46c5b016c..d725c1053b 100644
--- a/ios/src/mindustry/ios/IOSLauncher.java
+++ b/ios/src/mindustry/ios/IOSLauncher.java
@@ -205,7 +205,7 @@ public class IOSLauncher extends IOSApplication.Delegate{
                         UIInterfaceOrientation o = UIApplication.getSharedApplication().getStatusBarOrientation();
                         return forced && (o == UIInterfaceOrientation.Portrait || o == UIInterfaceOrientation.PortraitUpsideDown);
                     });
-                    t.add("Please rotate the device to landscape orientation to use the editor.").wrap().grow();
+                    t.add("Rotate the device to landscape orientation to use the editor.").wrap().grow();
                 });
             }));
         });
diff --git a/server/src/mindustry/server/ServerControl.java b/server/src/mindustry/server/ServerControl.java
index 7e1be67c52..06a117d1b0 100644
--- a/server/src/mindustry/server/ServerControl.java
+++ b/server/src/mindustry/server/ServerControl.java
@@ -42,8 +42,8 @@ public class ServerControl implements ApplicationListener{
     protected static DateTimeFormatter dateTime = DateTimeFormatter.ofPattern("MM-dd-yyyy HH:mm:ss"),
         autosaveDate = DateTimeFormatter.ofPattern("MM-dd-yyyy_HH-mm-ss");
 
-    private final CommandHandler handler = new CommandHandler("");
-    private final Fi logFolder = Core.settings.getDataDirectory().child("logs/");
+    public final CommandHandler handler = new CommandHandler("");
+    public final Fi logFolder = Core.settings.getDataDirectory().child("logs/");
 
     private Fi currentLogFile;
     private boolean inExtraRound;
@@ -55,8 +55,7 @@ public class ServerControl implements ApplicationListener{
     private Thread socketThread;
     private ServerSocket serverSocket;
     private PrintWriter socketOutput;
-
-    private String yes;
+    private String suggested;
 
     public ServerControl(String[] args){
         Core.settings.defaults(
@@ -916,10 +915,10 @@ public class ServerControl implements ApplicationListener{
         });
 
         handler.register("yes", "Run the last suggested incorrect command.", arg -> {
-            if(yes == null){
+            if(suggested == null){
                 err("There is nothing to say yes to.");
             }else{
-                handleCommandString(yes);
+                handleCommandString(suggested);
             }
         });
 
@@ -953,7 +952,7 @@ public class ServerControl implements ApplicationListener{
 
             if(closest != null){
                 err("Command not found. Did you mean \"" + closest.text + "\"?");
-                yes = line.replace(response.runCommand, closest.text);
+                suggested = line.replace(response.runCommand, closest.text);
             }else{
                 err("Invalid command. Type 'help' for help.");
             }
@@ -962,7 +961,7 @@ public class ServerControl implements ApplicationListener{
         }else if(response.type == ResponseType.manyArguments){
             err("Too many command arguments. Usage: " + response.command.text + " " + response.command.paramText);
         }else if(response.type == ResponseType.valid){
-            yes = null;
+            suggested = null;
         }
     }