Learn how to dynamically add content to Unity 2021 projects using ExecuteInEditMode and Unity Handles. Discover techniques for placing content in scenes with permanent changes that run in edit mode rather than play mode. Explore the Asset Bundle system for loading new assets at runtime, and gain insights into making efficient changes to multiple GameObjects. Master advanced Unity techniques to enhance game development skills, from adding new levels and enemies to implementing dynamic item systems. Ideal for both beginners and experienced developers looking to expand their Unity knowledge and create more sophisticated games.