Does the RTP predict your next spin?
Each spin of Bigger Bass Splash lands a new set of symbols on the 5x4 grid, and three or more SCATTER symbols start the Free Spins. How often that happens cannot be known in advance. The result of one session is random, whatever the RTP of 96.50 says, so a short run can end with nothing and a long one can end in a big win.
When the reels stop, the paid result follows the RTP version in use, and that version is shown only in the game rules. This page lists one version, 96.50, for Bigger Bass Splash. Check the rules before you compare this title with another one, because each RTP version sets its own return.
A win on a spin is paid as a multiple of the bet, and the top of the scale for Bigger Bass Splash is x5,000 the bet. That ceiling is reached very rarely, and nothing on the reels shows when it is near.