in lib/src/stage/game_element.dart [261:277]
void _animationDelay(FlipBook anim, SquareElement se, SquareState ss) {
anim
..alpha = 1
..play();
se.updateState();
switch (ss) {
case SquareState.revealed:
case SquareState.hidden:
game_audio.pop();
break;
case SquareState.bomb:
game_audio.bomb();
break;
default:
// noop
}
}