diff --git a/include/game/World.h b/include/game/World.h
index 9de0966..1ba38a8 100644
--- a/include/game/World.h
+++ b/include/game/World.h
@@ -125,6 +125,8 @@ class WorldListener {
 public:
     WorldListener() {}
 
+    virtual void OnGameEnd() {}
+
     virtual void OnTowerAdd(TowerPtr tower) {}
     virtual void OnTowerRemove(TowerPtr tower) {}
 
@@ -229,6 +231,8 @@ public:
     virtual void OnArrowShot(MobPtr target, bool fire, Tower* shooter);
     virtual void OnExplosion(utils::shape::Circle explosion, float centerDamage, Tower* shooter);
 
+    virtual void OnGameEnd();
+
     // MobListener
 
     virtual void OnMobDamage(Mob* target, float damage, Tower* source);
diff --git a/src/game/World.cpp b/src/game/World.cpp
index 7b7f9db..a73829f 100644
--- a/src/game/World.cpp
+++ b/src/game/World.cpp
@@ -106,6 +106,8 @@ bool World::saveMap(const std::string& fileName) const {
 }
 
 void World::tick(std::uint64_t delta) {
+    if(m_Game->getGameState() != GameState::Game) return;
+
     tickMobs(delta);
     for (TowerPtr tower : m_Towers) {
         tower->tick(delta, this);
@@ -293,7 +295,7 @@ void World::OnExplosion(utils::shape::Circle explosion, float centerDamage, Towe
 void World::OnMobCastleDamage(Mob* damager, TeamCastle* enemyCastle, float damage) {
     enemyCastle->damage(damage);
     if (enemyCastle->getLife() <= 0) {
-        // TODO: a team has won
+        getWorldNotifier().notifyListeners(&WorldListener::OnGameEnd);
     }
 }
 
@@ -304,6 +306,10 @@ void World::OnMobDamage(Mob* target, float damage, Tower* source) {
     }
 }
 
+void World::OnGameEnd(){
+    m_Game->setGameState(GameState::EndGame);
+}
+
 Team& World::getRedTeam() {
     return m_Game->getRedTeam();
 }