Cashback bonuses for one are something a little out of the ordinary that is now starting to pop up at online casinos around the world. Some online casinos are just more creative with their bonuses. Cashback bonuses work by giving players a percentage back of their losses at the casino over a set period of time. Sometimes these will be daily losses, weekly losses, or even monthly losses. Once calculated, the percentage of losses accrued will be returned to the player’s account.