private void RunGame()
    {
        string outputString = "";

        UIControllerScript.DisablePhaseNumbers();
        switch (currentPhase)
        {
        case 0:
            UIControllerScript.DisplayPhaseNumber(0, true);
            StartCoroutine("RunPhase0");
            break;

        case 1:
            UIControllerScript.DisplayPhaseNumber(1, true);
            StartCoroutine("RunPhase1");
            break;

        case 2:
            UIControllerScript.DisplayPhaseNumber(2, true);
            break;

        case 3:
            UIControllerScript.DisplayPhaseNumber(3, true);
            StartCoroutine("RunPhase3");
            break;

        case 4:
            UIControllerScript.DisplayPhaseNumber(4, true);
            break;

        case 5:
            UIControllerScript.DisplayPhaseNumber(5, true);
            break;

        case 6:
            UIControllerScript.DisplayPhaseNumber(6, true);
            break;

        default:
            outputString = "Game is running an unknown phase!";
            Debug.Log(outputString);
            break;
        }
    }     // end method RunGame