The Steam snap packages all of the dependencies you need to run the games in your library including the latest Mesa drivers.
This app is designed to get you up and running with the Steam snap as quickly as possible and includes tips on how to configure your system to support a gaming setup.
Check the getting started section to enable some specific features to migrate your game library and enable controller support.
And the Tips section to keep things running smoothly in future!
Follow the instructions to install Flutter and run the following commands:
git clone https://github.com/ubuntu-flutter-community/numbers.git
cd numbers
flutter pub get
flutter run