Try this just for an idea, I don't have your game software or hardware. Good luck.
void setup()
{
Serial.begin(9600); // set Serial monitor to match
}
void loop()
{
int val = analogRead(A1);
if(val > 506 && val < 516)
{
Serial.print(" Straight ahead ");
Serial.println(val - 511);
}
else if(val > 516)
{
Serial.print(" Turning Right ");
Serial.println(val - 511);
}
else if(val < 506)
{
Serial.print(" Turning Left ");
Serial.println(val - 511);
}
delay(300);
}