A machine that has a 95 percent RTP, for instance, should eventually return $95 for every $100 wagered. However, since this number is based on thousands or millionbest online slots usas of spins, individual experiences may differ significantly. Slot machine volatility, or the risk involved in playing a specific game, is another thing that players should be aware of. While low-volatility slots typically yield smaller wins more frequently, high-volatility slots may offer larger payouts but less frequently.