diff --git a/uml/main.wsd b/uml/main.wsd
index 4ed71f7..1eff433 100644
--- a/uml/main.wsd
+++ b/uml/main.wsd
@@ -1,11 +1,11 @@
-@startuml
+@startuml GameEngine
 package Game {
     class Game {
         + name: String
         + levels[]: Level
         + currentLevel: Level
-        
-        + changeLevel(Level lvl)
+        + gameJSON: String
+        + SetLevel(Level lvl)
     }
     class Level {
         + name: String
@@ -14,6 +14,22 @@ package Game {
         + start()
         + draw()
         + update()
+        + destroy(int id)
+    }
+
+    class GameObject {
+        + id: int
+        + x: double
+        + y: double
+        + width: double
+        + height: double
+        + img: Image
+        + layer: int
+        + load()
+        + unload()
+        + start()
+        + draw()
+        + update()
     }
 }
 package Frontend {