[Kreij]

Are you calling the game() method on a bad input?
That's what restarting the game, no?

If not, I'm confused.

Are you trying to do something like this?

While input does not equal the exit command
{
  Get input
  if (input is valid)
  {
      Do something with valid input and ask for next input
  }
  else
  {
      If (input does not equal the exit command)
      {
          Throw an error an error and ask for a valid input
      }
   }
}