How the calculator works
The calculator estimates value before variance by treating the bonus as cash value, adding the expected value of free spins, and subtracting the expected house edge cost of completing wagering. The simplified formula is: bonus value + free spin EV - expected loss from required wagering.
This is not a prediction of what will happen in one session. High-volatility slots can run far above or below RTP over thousands of spins, and bonus terms such as max cashout, max bet, country restrictions and excluded games can change the real outcome.
Slot data coverage
The current dataset covers expanded titles from Pragmatic Play, Hacksaw Gaming, Nolimit City and Play'n GO. These provider entries use the RTP lists supplied for these updates. Always check the game help screen or paytable before wagering because casino configurations can vary.