Return to Player
The Return to Player, or RTP, within any game is the expected percentage of stakes a specific game will return to the player over a period of time.
However, it is important to realize the RTP percentage is an average achieved over a significant number of game plays and not each time the game is played.
The average RTP percentage is typically measured over a large volume of hands or spins.
For example, if a game displays an 85% RTP, it is not expected the player would win an average of 85 units for every 100 units of currency staked during a playing session.
The RTP can vary widely in either direction due to statistical variance and differs from game to game.
Volatility
Volatility, often called variance or dispersion, is provided by the Game Suppliers. This is used to let players know how often they can expect the slot to pay out, and how big they can expect that payout will be.
A slot with low volatility will award players with frequent wins for low to mid-sized amounts, while a slot with high volatility will provide players with much larger wins at a more irregular pace.