Hi @Alp! Yes, you need create another one project for the new level, this example: Create multiple levels
You can also create a separate project for the menu to select the level. Or move to a new level with the help of triggers. (At the moment, the game results are not saved when you move to a new level, export to Unity is also not available for this system). In the future we are going to develop a multi-level system that will facilitate the task and with several levels.