Casinos would like you to play and keep playing at their casino. To reward their players for their registration or deposit, the casinos give away bonuses, usually in the form of extra play money or free spins. At the same time, the casino does impose conditions on this gift: you have to wager the bonus amount a minimum of x times before the money is actually yours.
So, in order to cash in a casino bonus, you must unlock it through the wager. If the wager for a bonus is 15, this means you have to bet the bonus amount 15 times before you can call the bonus money yours.
Please note: it is about bets, not about winnings or deposits. So in the meantime, you can just collect your winnings and bet them again to clear your bonus.
Clearing a casino bonus is possible on slot games. However, table games such as roulette, blackjack and poker are often not allowed for clearing a casino bonus. It would be too easy to release a wager by betting on both black and red. This is therefore not permitted. There's also a maximum amount per bet. Read the bonus conditions in your favourite casino carefully for more information.
Always make sure you read the bonus conditions when a casino offers you a bonus. Does it sound too good to be true? It probably is. Never hesitatie to contact customer service or the casino helpdesk if you need more information or explanation on the casino bonus.