How to read these numbers
Wagering requirements are the single biggest reason players cannot withdraw a bonus. A "100% up to 1 BTC" headline means little until you multiply it out: a 100 deposit with a 100% bonus and 40x wagering on deposit plus bonus is 8,000 in bets before a single withdrawal. Game contribution matters too, slots usually count 100% but table games often count 10% or less, so the same bonus can take ten times longer to clear on blackjack.
The EV calculator is the honest gut-check: a bonus is only worth taking if its size beats the house edge you pay to clear it. When the result is negative, the maths says skip it. These are estimates, real results vary by variance, but they stop you chasing traps. 18+ only, gamble responsibly.