It's very a game will certainly beat you every chance it gets.
One from the easiest and well-loved games is Black jack. For example: WR of 20xB means any gross total bet having a minimum of 20 times the bonus amount should be wagered. https://hocvienboardgame.net/tin-tuc/choi-lo-de-tai-rikvip-trai-nghiem-thu-vi/