The game gives you the opportunity to obtain free chips every 4 hours! All you have to do is click on the button under the "Bonus XX" Tab at the bottom of the main game screen.
Once you get the bonus, a timer informs you about how much time you have left until the next bonus is activated. If you log in every day, your daily bonus keeps getting bigger! Do not miss it! As you level up, the available bonuses are constantly growing!