All online casinos offer bonuses to their players, allowing them to earn extra money by simply deposit funds, referring friends or playing certain games. Sometimes, it’s as easy as inputting a bonus code and just taking the money. However, this would make it impossible for the casino to make any money. This is why they’ve placed “wager requirements” on their bonuses, where you must place a pre-determined minimum wager on games in order to receive your bonus money.