Regarding the graphics, penny slots have well-designed and beautiful graphics. What is the difference between penny slots and others Penny slots are usually referred to that high volatility. Because playing at slot games which are volatile will give players bigger winning than other games like low volatility ones. Therefore, it is necessary to find slots that help you to have big wins. Indeed, Penny slots have more paylines than other slots too, therefore there will be more free spins and special features landing on the wheel while you are spinning.