
Free spins are promotional slot rounds granted to a player at no stake cost — the operator (or game provider) funds a set number of spins at a defined bet value on specified games, with winnings credited as cash or bonus funds.
Technically, free spins are not just a bonus-engine feature: they must be provisioned inside the game provider's system, which is why free-spin APIs are a standard part of game aggregator integrations. The operator's platform requests a campaign (games, spin count, bet level, expiry, player list), the provider executes it in-game, and results flow back through wallet transactions.
Cost and control levers:
Why it matters: free spins are the most widely used casino acquisition and reactivation mechanic, but fragmented per-provider APIs make them operationally painful at scale. A platform that orchestrates campaigns across all providers through one promotional tooling layer turns them into a routine CRM tool.