The RTP (Return to Player) or payout rate of STS is unknown. Usually, online casino sites in Canada score between 95% to 98%. The score tells us what the casino makes as a profit and what is paid out to members in winnings. For example, an RTP of 95% shows us 5% is profit and 95% of all money paid into the casino is then paid back out in winnings. We can only assume STS are within the 95% to 98% bracket.