Actual game controller layouts and ideas

Projects General Guidance
8

I can't figure what you want wiring help for if you don't have a physical plan with a set of switches.

In principle switches are simple. Connect the switch between an Arduino I/O pin and GND so that it connects the pin to GND when the switch is pressed. Then try this simple program

byte switchPin = 7;
byte switchState;

void setup() {
  Serial.begin(115200);
  Serial.println("Starting");
  pinMode(switchPin, INPUT_PULLUP);
}

void loop() {
   switchState = digitalRead(switchPin);
   Serial.println(switchState);
   delay(300); // just to slow things down for the demo
}

...R