// Window size is originally 800x800

        camera = new OrthographicCamera();
        viewport = new FitViewport(400, 800, camera);
        viewport.setScreenBounds(0, 0, 400, 800);
        viewport.apply();

        camera2 = new OrthographicCamera();
        viewport2 = new FitViewport(800, 1600, camera2);
        viewport2.setScreenBounds(400, 0, 400, 800);
        viewport2.apply();