@Kartenzahler is 100% right. I tried a 400% bonus at Club Riches Casino and they refused to award it even though I followed all their terms. Had to file a complaint with AskGamblers. These casinos are counting on you to play conservatively, but the sheer volume of rollover makes it almost impossible to get through without busting. The odds of successfully completing a 400% bonus with typical wagering requirements are less than 20%.