@GurhanHazinedar Thank you for your reply. I thought you would misunderstand my question with the wrong translation. But you gave me exactly what I wanted. I am grateful for this as well. and I have additional question. I found that you blocked Prefab Prototype addition and removal at runtime. If the infinite world dynamically repeats the drawing and disappearing of many kinds of (different shapes) items, should I register hundreds to thousands of Prefab Prototypes on the editor's inspector before the start of the scene? I would like to know what kind of problems can cause the registration / removal of Prototype to be done dynamically.