Spinback bonuses are exclusive to the Wildz Casino. They allow players to get some of their lost money back and try their luck once again in some of the games that the site has to offer. The feature is mainly used in the Book of Dead slot, but it was also introduced in the Temple Tumble game, which is where you must spend them if you wish to claim the money back. Spinbacks are not meant to be lucrative rewards. These bonuses are only meant to provide players with a sense of calmness in which they can simply get their money back after they've lost it. You'll get awarded with these spinbacks as soon as you lose 5 rounds in a row at Book of Dead. Once that happens, you can head straight to the Temple Tumble game and try your luck at the slot to see if you can get some of your cash in return!