in lib/src/game_manager.dart [49:56]
void updateClock() {
if (_clockTimer == null && _game.state == GameState.started) {
_clockTimer = Timer(const Duration(seconds: 1), updateClock);
} else if (_clockTimer != null && _game.state != GameState.started) {
_clockTimer!.cancel();
_clockTimer = null;
}
}