This calculator lists
the expected return of a bonus and chance of a positive return. You can use
this calculator to help select a bet size or to check if your results were
within normal expectations. The required inputs for this calculator are the
game selection, bonus, wagering, and bet size. After selecting the values,
click "Calculate," to display the results. A modified
calc is also available, which returns an hours of play estimate along
with return & variance data. See the instructions
page for more detail about the calc operation.