diff --git a/Engine.Core/Extensions/BehaviourControllerExtensions.cs b/Engine.Core/Extensions/BehaviourControllerExtensions.cs
index 01a0c5d..5665307 100644
--- a/Engine.Core/Extensions/BehaviourControllerExtensions.cs
+++ b/Engine.Core/Extensions/BehaviourControllerExtensions.cs
@@ -6,6 +6,9 @@ namespace Syntriax.Engine.Core;
 
 public static class BehaviourControllerExtensions
 {
+    public static T GetOrAddBehaviour<T>(this IBehaviourController behaviourController, params object?[]? args) where T : class, IBehaviour
+        => behaviourController.GetBehaviour<T>() ?? behaviourController.AddBehaviour<T>(args);
+
     public static bool TryGetBehaviourInParent<T>(this IBehaviourController behaviourController, [NotNullWhen(returnValue: true)] out T? behaviour) where T : class
     {
         behaviour = GetBehaviourInParent<T>(behaviourController);