Unity Deprecated InstanceID. Do This Instead!

Unity 6.5 is about to break a ton of editor tools and Asset Store packages. In this video, we break down the complete migration from the old InstanceID / GetInstanceID() system to the new EntityId. We look at real-world examples from actual Unity packages, covering method replacements (GetEntityId, EntityIdToObject), hierarchy callbacks, version-safe wrappers, extension methods, and clever preprocessor tricks used by professional developers. Whether you're getting deprecation warnings in 6.4 or preparing for the hard errors in 6.5, this practical guide shows you exactly how to update your code cleanly and future-proof it for the ECS-for-All future. Don't let your editor tools break — watch this before Unity 6.5 drops! Want to support me? 😀 Buy me a coffee! https://ko-fi.com/adammyhre 🔔 Subscribe for more Unity Tutorials https://youtube.com/@git-amend Discord: https://discord.gg/FDRZGQBBUC #unity3d #gamedev #indiedev ▬ Contents of this video ▬▬▬▬▬▬▬▬▬▬ More Useful Code: https://github.com/adammyhre?tab=repositories Unity Utility Library: https://github.com/adammyhre/Unity-Utils Lock Inspector Hotkey: https://gist.github.com/adammyhre/4754f731a93bf1cab0d1385ccfa23642 *Other Recommended Tools* _(Affiliate Links)_ Phantom Navigator - https://assetstore.unity.com/packages/tools/utilities/phantom-navigator-371346?aid=1101lw3sv Ultimate Preview - https://assetstore.unity.com/packages/tools/utilities/ultimate-preview-bundle-340976?aid=1101lw3sv Mouse Shortcuts - https://assetstore.unity.com/packages/tools/utilities/mouse-button-shortcuts-and-selection-history-228013?aid=1101lw3sv Init(args) - https://assetstore.unity.com/packages/tools/utilities/init-args-200530?aid=1101lw3sv Wingman - https://assetstore.unity.com/packages/tools/utilities/wingman-your-inspector-s-best-friend-303181?aid=1101lw3sv Favorites Window - https://assetstore.unity.com/packages/tools/utilities/favorites-window-123487?aid=1101lw3sv Scene Notes - https://assetstore.unity.com/publishers/87819?aid=1101lw3sv Beautify - https://assetstore.unity.com/packages/vfx/shaders/fullscreen-camera-effects/beautify-3-advanced-post-processing-233073?aid=1101lw3sv Odin - https://assetstore.unity.com/packages/tools/utilities/odin-inspector-and-serializer-89041?aid=1101lw3sv?aid=1101lw3sv Odin Validator - https://assetstore.unity.com/packages/tools/utilities/odin-validator-227861?aid=1101lw3sv Hot Reload: https://assetstore.unity.com/packages/tools/utilities/hot-reload-edit-code-without-compiling-254358?aid=1101lw3sv Better Hierarchy: https://assetstore.unity.com/packages/tools/utilities/better-hierarchy-272963?aid=1101lw3sv Better Transform: https://assetstore.unity.com/packages/tools/utilities/better-transform-size-notes-global-local-workspace-parent-child--321300?aid=1101lw3sv Better Mesh Filter: https://assetstore.unity.com/packages/tools/utilities/better-mesh-mesh-preview-full-insight-at-a-glance-321364?aid=1101lw3sv Editor Console Pro: https://assetstore.unity.com/packages/tools/utilities/editor-console-pro-11889?aid=1101lw3sv Any Object Finder: https://assetstore.unity.com/packages/tools/utilities/any-object-finder-286455?aid=1101lw3sv Kybernetic Tools: https://assetstore.unity.com/publishers/16747?aid=1101lw3sv Sisus Tools: https://assetstore.unity.com/publishers/41398?aid=1101lw3sv Prime Tween - https://assetstore.unity.com/packages/tools/animation/primetween-high-performance-animations-and-sequences-252960?aid=1101lw3s Rabbit Logger - https://assetstore.unity.com/packages/tools/utilities/rabbit-logger-305396?aid=1101lw3s *Follow me!* https://linktr.ee/gitamend