Sweet Bonanza starts every spin from zero
Four or more scatters start the 10 free spins, yet how often that happens is not known in advance. Each spin is random, and past spins do not tell you what the next one holds. Whatever the RTP, the result of one session is random, so no one can predict when the next bonus round arrives.
Two RTP versions of Sweet Bonanza exist, and which one runs at Star Casino is shown only in the game rules. The two figures sit close together, yet a single session can still end far above or below the RTP. Read the RTP line in the game rules before you compare one session with another.
21,100 times the bet is the maximum win of Sweet Bonanza, and it is a ceiling reached very rarely. It shows the top of what one bet can pay, not what a session will bring. Set your bet with the amount you can afford to lose, because no session comes with a promised big win.