private void checkEscapeButton() {
        if (input.back()) {
            if (this instanceof BookScreen
                    || this instanceof MinigameSelectorScreen
                    || this instanceof BurndownScreen
                    || this instanceof ScoreScreen
                    || this instanceof VisionEndScreen) {
                game.setScreen(PVU.MAIN_SCREEN);
            } else if (this instanceof IntroScreen) {
                return;
            } else {
                pauseButtons[selectedButton].setStyle(buttonStyle);
                selectedButton = 0;
                pauseButtons[selectedButton].setStyle(selectedButtonStyle);
                running = false;
            }
        }
    }