Two meanings of free
All games here use fictional credits and require no purchases. Within some games, a free-spin feature is an additional sequence triggered under that game's own rules. These feature spins are part of the round, rather than separate purchases or a prize you can redeem.
Follow the whole sequence
The player may show a counter, changing multiplier or another visual effect while a feature runs. The exact behaviour belongs to the particular game. Super Gummy Strike has a complete free-spin feature; read its rule panel for the specific symbols and sequence rather than relying on another game's description.
Returning after an interruption
Do not repeatedly start fresh requests if a connection stops during a feature. The player can recover its last recorded round and uses an identifier to protect retries. Once the current sequence or pending choice has settled, the normal controls become available again.