private void singlePlayerBackBtnActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_singlePlayerBackBtnActionPerformed
        singlePlayerPanel.setVisible(false);
        NewPlayerPlanel.setVisible(false);
        playBtn.setVisible(false);
        singlePlayerBtn.setVisible(true);
        twoPlayerBtn.setVisible(true);
        quitGameBtn.setVisible(true);
    }//GEN-LAST:event_singlePlayerBackBtnActionPerformed