diff --git a/src/com/annimon/turrets/Constants.java b/src/com/annimon/turrets/Constants.java
new file mode 100644
index 0000000..83ae6e8
--- /dev/null
+++ b/src/com/annimon/turrets/Constants.java
@@ -0,0 +1,12 @@
+package com.annimon.turrets;
+
+/**
+ *
+ * @author aNNiMON
+ */
+public interface Constants {
+
+    // Screen
+    public static final int WIDTH = 800, HEIGHT = 600;
+    public static final boolean RESIZABLE = false;
+}
diff --git a/src/com/annimon/turrets/Main.java b/src/com/annimon/turrets/Main.java
index 81bdb6c..1d43ff3 100644
--- a/src/com/annimon/turrets/Main.java
+++ b/src/com/annimon/turrets/Main.java
@@ -24,8 +24,8 @@ public class Main extends JFrame {
 
     public Main() {
         super("Turrets");
-        setPreferredSize(new Dimension(800, 600));
-        setResizable(false);
+        setPreferredSize(new Dimension(Constants.WIDTH, Constants.HEIGHT));
+        setResizable(Constants.RESIZABLE);
         setLocationByPlatform(true);
         setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);