there is no any package call "flame_isolate" but flame example show "flame_isolate" package in pubspec.yml file. how can I find that package
flutter version 3.3.8 stable, flame version 1.4.0
flame_isolate
is not published yet, it will probably be published some time next week.
You can always go to https://pub.dev to check if a package is published.
EDIT: flame_isolate
is now published on pub.dev.