Flutter App: Allow Tapping with Multiple Fingers Simultaneously

My app has a counter that increases each time the screen is tapped. Unfortunately, when the screen is tapped with two or more fingers simultaneously, the counter only increases by 1. (I don't know how to enable multiple simultaneous taps.) I need the counter to increase instantly each and every time a finger touches the screen, whether it's 1 finger or 2 fingers or 10 fingers tapping rapidly. Each time a finger touches the screen: 1. the counter should increase and 2. a sound should play and 3. a little "+1" from the point on the screen where they've tapped As an example, this game has the exact functionality I need: [login to view URL] Thank you!