Hey it's me again ❤️ I created a cross-platform solution in: https://github.com/Glartek/flutter-unity/pull/55 It's working perfectly for all platforms and thank you again for your web-implementation ❤️ But I recognized that sometimes Unity is not reacting if I send messages to Unity. I solved this with this: https://github.com/Glartek/flutter-unity/pull/55/commits/0237f6f386cf289b19d1777fdb08ad0e4f7d8717 Maybe you can apply this fix also for this package :)