The average amount of money a player can anticipate winning back over time is indicated by the RTP, a statistical metric. Choosing slots with an RTP owilliam hill slotsf 96 percent or more increases the likelihood that players will make money over time. It's also a good idea to investigate the volatility of various slot machines. Low-volatility slots offer more regular, smaller payouts, while high-volatility slots may offer bigger payouts but less frequent wins.