diff --git a/.gitignore b/.gitignore
index 59080869ff..12ca21bf90 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,7 +21,7 @@
 /android/assets/mindustry-saves/
 /core/assets/gifexport/
 /core/assets/version.properties
-/core/assets/locales.json
+/core/assets/locales
 /ios/src/io/anuke/mindustry/gen/
 *.gif
 
diff --git a/annotations/src/io/anuke/annotations/Annotations.java b/annotations/src/io/anuke/annotations/Annotations.java
index eeef7c2599..4f8381d177 100644
--- a/annotations/src/io/anuke/annotations/Annotations.java
+++ b/annotations/src/io/anuke/annotations/Annotations.java
@@ -11,6 +11,13 @@ import java.lang.annotation.Target;
  */
 public class Annotations{
 
+    /** Marks a class as serializable.*/
+    @Target(ElementType.TYPE)
+    @Retention(RetentionPolicy.CLASS)
+    public @interface Serialize{
+
+    }
+
     public enum PacketPriority{
         /** Gets put in a queue and processed if not connected. */
         normal,
diff --git a/annotations/src/io/anuke/annotations/SerializeAnnotationProcessor.java b/annotations/src/io/anuke/annotations/SerializeAnnotationProcessor.java
new file mode 100644
index 0000000000..58aa2abd5b
--- /dev/null
+++ b/annotations/src/io/anuke/annotations/SerializeAnnotationProcessor.java
@@ -0,0 +1,110 @@
+package io.anuke.annotations;
+
+import com.squareup.javapoet.*;
+import io.anuke.annotations.Annotations.Serialize;
+
+import javax.annotation.processing.*;
+import javax.lang.model.SourceVersion;
+import javax.lang.model.element.Modifier;
+import javax.lang.model.element.TypeElement;
+import javax.lang.model.element.VariableElement;
+import javax.lang.model.util.ElementFilter;
+import java.io.DataInput;
+import java.io.DataOutput;
+import java.io.IOException;
+import java.util.List;
+import java.util.Set;
+
+@SupportedSourceVersion(SourceVersion.RELEASE_8)
+@SupportedAnnotationTypes({
+"io.anuke.annotations.Annotations.Serialize"
+})
+public class SerializeAnnotationProcessor extends AbstractProcessor{
+    /**Target class name.*/
+    private static final String className = "Serialization";
+    /** Name of the base package to put all the generated classes. */
+    private static final String packageName = "io.anuke.mindustry.gen";
+
+    private int round;
+
+    @Override
+    public synchronized void init(ProcessingEnvironment processingEnv){
+        super.init(processingEnv);
+        //put all relevant utils into utils class
+        Utils.typeUtils = processingEnv.getTypeUtils();
+        Utils.elementUtils = processingEnv.getElementUtils();
+        Utils.filer = processingEnv.getFiler();
+        Utils.messager = processingEnv.getMessager();
+    }
+
+    @Override
+    public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv){
+        if(round++ != 0) return false; //only process 1 round
+
+        try{
+            Set<TypeElement> elements = ElementFilter.typesIn(roundEnv.getElementsAnnotatedWith(Serialize.class));
+
+            TypeSpec.Builder classBuilder = TypeSpec.classBuilder(className).addModifiers(Modifier.PUBLIC);
+            MethodSpec.Builder method = MethodSpec.methodBuilder("init").addModifiers(Modifier.PUBLIC, Modifier.STATIC);
+
+            for(TypeElement elem : elements){
+                TypeName type = TypeName.get(elem.asType());
+
+                TypeSpec.Builder serializer = TypeSpec.anonymousClassBuilder("")
+                .addSuperinterface(ParameterizedTypeName.get(
+                ClassName.get(Class.forName("io.anuke.ucore.io.TypeSerializer")), type));
+
+                MethodSpec.Builder writeMethod = MethodSpec.methodBuilder("write")
+                .returns(void.class)
+                .addParameter(DataOutput.class, "stream")
+                .addParameter(type, "object")
+                .addAnnotation(Override.class)
+                .addException(IOException.class)
+                .addModifiers(Modifier.PUBLIC);
+
+                MethodSpec.Builder readMethod = MethodSpec.methodBuilder("read")
+                .returns(type)
+                .addParameter(DataInput.class, "stream")
+                .addAnnotation(Override.class)
+                .addException(IOException.class)
+                .addModifiers(Modifier.PUBLIC);
+
+                readMethod.addStatement("$L object = new $L()", type, type);
+
+                List<VariableElement> fields = ElementFilter.fieldsIn(Utils.elementUtils.getAllMembers(elem));
+                for(VariableElement field : fields){
+                    if(field.getModifiers().contains(Modifier.STATIC) || field.getModifiers().contains(Modifier.TRANSIENT) || field.getModifiers().contains(Modifier.PRIVATE)) continue;
+
+                    String name = field.getSimpleName().toString();
+                    String typeName = Utils.typeUtils.erasure(field.asType()).toString().replace('$', '.');
+                    String capName = Character.toUpperCase(typeName.charAt(0)) + typeName.substring(1);
+
+                    if(field.asType().getKind().isPrimitive()){
+                        writeMethod.addStatement("stream.write" + capName + "(object." + name + ")");
+                        readMethod.addStatement("object." + name + "= stream.read" + capName + "()");
+                    }else{
+                        writeMethod.addStatement("io.anuke.ucore.core.Settings.getSerializer(" + typeName+ ".class).write(stream, object." + name + ")");
+                        readMethod.addStatement("object." + name + " = (" +typeName+")io.anuke.ucore.core.Settings.getSerializer(" + typeName+ ".class).read(stream)");
+                    }
+                }
+
+                readMethod.addStatement("return object");
+
+                serializer.addMethod(writeMethod.build());
+                serializer.addMethod(readMethod.build());
+
+                method.addStatement("io.anuke.ucore.core.Settings.setSerializer($N, $L)",  Utils.elementUtils.getBinaryName(elem).toString().replace('$', '.') + ".class", serializer.build());
+            }
+
+            classBuilder.addMethod(method.build());
+
+            //write result
+            JavaFile.builder(packageName, classBuilder.build()).build().writeTo(Utils.filer);
+
+            return true;
+        }catch(Exception e){
+            e.printStackTrace();
+            throw new RuntimeException(e);
+        }
+    }
+}
diff --git a/build.gradle b/build.gradle
index 74603609e1..709973bcb9 100644
--- a/build.gradle
+++ b/build.gradle
@@ -27,7 +27,7 @@ allprojects {
         appName = 'Mindustry'
         gdxVersion = '1.9.8'
         roboVMVersion = '2.3.0'
-        uCoreVersion = '7aa05daa277ffb67cda3d2d047c37b2f441e4e4e'
+        uCoreVersion = '7fafee20b6bf5615e009d2be20d1c1331d1e66c1'
 
         getVersionString = {
             String buildVersion = getBuildVersion()
@@ -44,14 +44,13 @@ allprojects {
         }
 
         generateLocales = {
-            def output = '["en",'
+            def output = 'en\n'
             def bundles = new File(project(':core').projectDir, 'assets/bundles/')
             bundles.listFiles().each { other ->
                 if(other.name == "bundle.properties") return;
-                output += '"' + other.name.substring("bundle".length() + 1, other.name.lastIndexOf('.')) + '",'
+                output += other.name.substring("bundle".length() + 1, other.name.lastIndexOf('.')) + "\n"
             }
-            output = (output.substring(0, output.size() - 1) + "]")
-            new File(project(':core').projectDir, 'assets/locales.json').text = output;
+            new File(project(':core').projectDir, 'assets/locales').text = output;
         }
 
         writeVersion = {
@@ -118,9 +117,6 @@ project(":html") {
         compile "com.badlogicgames.gdx:gdx-controllers-gwt:$gdxVersion:sources"
     }
 
-    compileJava.options.compilerArgs = [
-        "-processor", "io.anuke.annotations.RemoteMethodAnnotationProcessor"
-    ]
 }
 
 project(":ios") {
@@ -185,7 +181,7 @@ project(":core") {
     }
 
     compileJava.options.compilerArgs = [
-        "-processor", "io.anuke.annotations.RemoteMethodAnnotationProcessor"
+        "-processor", "io.anuke.annotations.RemoteMethodAnnotationProcessor,io.anuke.annotations.SerializeAnnotationProcessor"
     ]
 }
 
diff --git a/core/src/io/anuke/mindustry/Vars.java b/core/src/io/anuke/mindustry/Vars.java
index fccf8d9735..ba1605bb6f 100644
--- a/core/src/io/anuke/mindustry/Vars.java
+++ b/core/src/io/anuke/mindustry/Vars.java
@@ -4,7 +4,6 @@ import com.badlogic.gdx.Application.ApplicationType;
 import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.files.FileHandle;
 import com.badlogic.gdx.graphics.Color;
-import com.badlogic.gdx.utils.Json;
 import io.anuke.mindustry.core.*;
 import io.anuke.mindustry.entities.Player;
 import io.anuke.mindustry.entities.TileEntity;
@@ -16,6 +15,7 @@ import io.anuke.mindustry.entities.traits.SyncTrait;
 import io.anuke.mindustry.entities.units.BaseUnit;
 import io.anuke.mindustry.game.Team;
 import io.anuke.mindustry.game.Version;
+import io.anuke.mindustry.gen.Serialization;
 import io.anuke.mindustry.net.Net;
 import io.anuke.mindustry.world.blocks.defense.ForceProjector.ShieldEntity;
 import io.anuke.ucore.entities.Entities;
@@ -138,9 +138,10 @@ public class Vars{
     public static final Translator[] tmptr = new Translator[]{new Translator(), new Translator(), new Translator(), new Translator()};
 
     public static void init(){
+        Serialization.init();
 
         //load locales
-        String[] stra = new Json().fromJson(String[].class, Gdx.files.internal("locales.json"));
+        String[] stra = Gdx.files.internal("locales").readString().split("\n");
         locales = new Locale[stra.length];
         for(int i = 0; i < locales.length; i++){
             String code = stra[i];
diff --git a/core/src/io/anuke/mindustry/core/Control.java b/core/src/io/anuke/mindustry/core/Control.java
index a9f97f88e4..c71aa6eacf 100644
--- a/core/src/io/anuke/mindustry/core/Control.java
+++ b/core/src/io/anuke/mindustry/core/Control.java
@@ -51,6 +51,7 @@ public class Control extends Module{
     private Throwable error;
 
     public Control(){
+
         saves = new Saves();
         db = new ContentDatabase();
 
diff --git a/core/src/io/anuke/mindustry/game/ContentDatabase.java b/core/src/io/anuke/mindustry/game/ContentDatabase.java
index d296fb875c..b35a160640 100644
--- a/core/src/io/anuke/mindustry/game/ContentDatabase.java
+++ b/core/src/io/anuke/mindustry/game/ContentDatabase.java
@@ -68,7 +68,7 @@ public class ContentDatabase{
     }
 
     public void load(){
-        ObjectMap<ContentType, Array<String>> result = Settings.getJson("content-database", ObjectMap.class);
+        ObjectMap<ContentType, Array<String>> result = Settings.getBinary("content-database", ObjectMap.class, () -> new ObjectMap<>());
 
         for(Entry<ContentType, Array<String>> entry : result.entries()){
             ObjectSet<String> set = new ObjectSet<>();
@@ -87,7 +87,7 @@ public class ContentDatabase{
             write.put(entry.key, entry.value.iterator().toArray());
         }
 
-        Settings.putJson("content-database", write);
+        Settings.putBinary("content-database", write);
         Settings.save();
         dirty = false;
     }
diff --git a/core/src/io/anuke/mindustry/game/Saves.java b/core/src/io/anuke/mindustry/game/Saves.java
index ec2475c7ba..dfe6c11fee 100644
--- a/core/src/io/anuke/mindustry/game/Saves.java
+++ b/core/src/io/anuke/mindustry/game/Saves.java
@@ -2,6 +2,7 @@ package io.anuke.mindustry.game;
 
 import com.badlogic.gdx.files.FileHandle;
 import com.badlogic.gdx.utils.Array;
+import com.badlogic.gdx.utils.IntArray;
 import com.badlogic.gdx.utils.IntMap;
 import com.badlogic.gdx.utils.TimeUtils;
 import io.anuke.mindustry.core.GameState.State;
@@ -44,9 +45,10 @@ public class Saves{
 
     public void load(){
         saves.clear();
-        int[] slots = Settings.getJson("save-slots", int[].class);
+        IntArray slots = Settings.getBinary("save-slots", IntArray.class, IntArray::new);
 
-        for(int index : slots){
+        for(int i = 0; i < slots.size; i ++){
+            int index = slots.get(i);
             if(SaveIO.isSaveValid(index)){
                 SaveSlot slot = new SaveSlot(index);
                 saves.add(slot);
@@ -138,11 +140,10 @@ public class Saves{
     }
 
     private void saveSlots(){
-        int[] result = new int[saves.size];
-        for(int i = 0; i < result.length; i++){
-            result[i] = saves.get(i).index;
-        }
-        Settings.putJson("save-slots", result);
+        IntArray result = new IntArray(saves.size);
+        for(int i = 0; i < saves.size; i++) result.add(saves.get(i).index);
+
+        Settings.putBinary("save-slots", result);
         Settings.save();
     }
 
diff --git a/core/src/io/anuke/mindustry/maps/Maps.java b/core/src/io/anuke/mindustry/maps/Maps.java
index 5b0ce56937..adff44c8a6 100644
--- a/core/src/io/anuke/mindustry/maps/Maps.java
+++ b/core/src/io/anuke/mindustry/maps/Maps.java
@@ -90,7 +90,7 @@ public class Maps implements Disposable{
                 Settings.putString("map-data-" + name, new String(Base64Coder.encode(stream.toByteArray())));
                 if(!customMapNames.contains(name, false)){
                     customMapNames.add(name);
-                    Settings.putJson("custom-maps", customMapNames);
+                    Settings.putBinary("custom-maps", customMapNames);
                 }
                 Settings.save();
             }
@@ -130,7 +130,7 @@ public class Maps implements Disposable{
         } else {
             customMapNames.removeValue(map.name, false);
             Settings.putString("map-data-" + map.name, "");
-            Settings.putJson("custom-maps", customMapNames);
+            Settings.putBinary("custom-maps", customMapNames);
             Settings.save();
         }
     }
@@ -163,7 +163,7 @@ public class Maps implements Disposable{
             }
 
         }else{
-            customMapNames = Settings.getJson("custom-maps", Array.class);
+            customMapNames = Settings.getBinary("custom-maps", Array.class, () -> new Array<>());
 
             for(String name : customMapNames){
                 try{
diff --git a/core/src/io/anuke/mindustry/maps/Sector.java b/core/src/io/anuke/mindustry/maps/Sector.java
index 9fd344d954..4299cb5497 100644
--- a/core/src/io/anuke/mindustry/maps/Sector.java
+++ b/core/src/io/anuke/mindustry/maps/Sector.java
@@ -2,6 +2,7 @@ package io.anuke.mindustry.maps;
 
 import com.badlogic.gdx.graphics.Texture;
 import com.badlogic.gdx.utils.Array;
+import io.anuke.annotations.Annotations.Serialize;
 import io.anuke.mindustry.game.Difficulty;
 import io.anuke.mindustry.game.Saves.SaveSlot;
 import io.anuke.mindustry.game.SpawnGroup;
@@ -12,6 +13,7 @@ import io.anuke.ucore.util.Bits;
 
 import static io.anuke.mindustry.Vars.control;
 
+@Serialize
 public class Sector{
     /**Position on the map, can be positive or negative.*/
     public short x, y;
diff --git a/core/src/io/anuke/mindustry/maps/Sectors.java b/core/src/io/anuke/mindustry/maps/Sectors.java
index 4694c1cc94..965bbccc1a 100644
--- a/core/src/io/anuke/mindustry/maps/Sectors.java
+++ b/core/src/io/anuke/mindustry/maps/Sectors.java
@@ -29,10 +29,6 @@ public class Sectors{
 
     private GridMap<Sector> grid = new GridMap<>();
 
-    public Sectors(){
-        Settings.json().addClassTag("Sector", Sector.class);
-    }
-
     public void playSector(Sector sector){
         if(sector.hasSave() && SaveIO.breakingVersions.contains(sector.getSave().getBuild())){
             sector.getSave().delete();
@@ -117,7 +113,7 @@ public class Sectors{
         }
         grid.clear();
 
-        Array<Sector> out = Settings.getJson("sectors", Array.class);
+        Array<Sector> out = Settings.getBinary("sectors", Array.class, () -> new Array<>());
 
         for(Sector sector : out){
             createTexture(sector);
@@ -141,7 +137,7 @@ public class Sectors{
             out.add(sector);
         }
 
-        Settings.putJson("sectors", out);
+        Settings.putBinary("sectors", out);
         Settings.save();
     }
 
diff --git a/core/src/io/anuke/mindustry/net/Administration.java b/core/src/io/anuke/mindustry/net/Administration.java
index 40ede1b6dc..4c0a50469c 100644
--- a/core/src/io/anuke/mindustry/net/Administration.java
+++ b/core/src/io/anuke/mindustry/net/Administration.java
@@ -3,6 +3,7 @@ package io.anuke.mindustry.net;
 import com.badlogic.gdx.utils.Array;
 import com.badlogic.gdx.utils.IntMap;
 import com.badlogic.gdx.utils.ObjectMap;
+import io.anuke.annotations.Annotations.Serialize;
 import io.anuke.ucore.core.Settings;
 
 import static io.anuke.mindustry.Vars.headless;
@@ -276,16 +277,17 @@ public class Administration{
     }
 
     public void save(){
-        Settings.putJson("player-info", playerInfo);
-        Settings.putJson("banned-ips", bannedIPs);
+        Settings.putBinary("player-info", playerInfo);
+        Settings.putBinary("banned-ips", bannedIPs);
         Settings.save();
     }
 
     private void load(){
-        playerInfo = Settings.getJson("player-info", ObjectMap.class);
-        bannedIPs = Settings.getJson("banned-ips", Array.class);
+        playerInfo = Settings.getBinary("player-info", ObjectMap.class, () -> new ObjectMap<>());
+        bannedIPs = Settings.getBinary("banned-ips", Array.class, () -> new Array<>());
     }
 
+    @Serialize
     public static class PlayerInfo{
         public String id;
         public String lastName = "<unknown>", lastIP = "<unknown>";
@@ -303,7 +305,7 @@ public class Administration{
             this.id = id;
         }
 
-        private PlayerInfo(){
+        public PlayerInfo(){
         }
     }
 
diff --git a/core/src/io/anuke/mindustry/ui/dialogs/JoinDialog.java b/core/src/io/anuke/mindustry/ui/dialogs/JoinDialog.java
index 3b3192d63a..ad7de7fea2 100644
--- a/core/src/io/anuke/mindustry/ui/dialogs/JoinDialog.java
+++ b/core/src/io/anuke/mindustry/ui/dialogs/JoinDialog.java
@@ -3,6 +3,7 @@ package io.anuke.mindustry.ui.dialogs;
 import com.badlogic.gdx.graphics.Color;
 import com.badlogic.gdx.math.MathUtils;
 import com.badlogic.gdx.utils.Array;
+import io.anuke.annotations.Annotations.Serialize;
 import io.anuke.mindustry.Vars;
 import io.anuke.mindustry.core.Platform;
 import io.anuke.mindustry.entities.Player;
@@ -326,22 +327,24 @@ public class JoinDialog extends FloatingDialog{
     }
 
     private void loadServers(){
-        servers = Settings.getJson("server-list", Array.class);
+        servers = Settings.getBinary("server-list", Array.class, () -> new Array<>());
     }
 
     private void saveServers(){
-        Settings.putJson("server-list", servers);
+        Settings.putBinary("server-list", servers);
         Settings.save();
     }
 
-    static class Server{
-        String ip;
-        int port;
+    @Serialize
+    public static class Server{
+        public String ip;
+        public int port;
 
         transient Host host;
         transient Table content;
 
         void setIP(String ip){
+
             //parse ip:port, if unsuccessful, use default values
             if(ip.lastIndexOf(':') != -1 && ip.lastIndexOf(':') != ip.length()-1){
                 try{
@@ -362,6 +365,6 @@ public class JoinDialog extends FloatingDialog{
             return ip + (port != Vars.port ? ":" + port : "");
         }
 
-        Server(){}
+        public Server(){}
     }
 }