What are free spins in online slots?

Free spins are slot rounds played without deducting from the player's balance, won inside a game's bonus feature or granted by an operator as a promotion. Any winnings usually pay at the player's triggering stake. They are one of the most widely used acquisition and retention tools in online casinos.

There are two kinds. In-game free spins are a bonus feature won by landing scatters or triggers during play. Operator-awarded free rounds are a marketing grant, delivered through the platform and often carrying wagering requirements before winnings can be withdrawn.

Not every slot uses classic free spins; many modern titles deliver their headline feature through respins or Hold & Win bonuses instead, which serve the same engagement purpose with a different loop.

CROCO Games & Free spins

CROCO titles support operator-awarded free rounds through the API for promotional campaigns. Many CROCO flagships deliver their core feature via respins and Hold & Win rather than classic free spins — Clover Strike and Piggy Party are examples — giving operators flexible options for retention promotions.