Timing of extra rounds and session swings
Scatter symbols land on the 7x7 grid at random, and no one can tell in advance how often the bonus round comes. The result of one session stays unknown, whatever the RTP of 96.55%. High volatility means the wins come in uneven bursts.
Clusters of five or more matching symbols pay when they connect horizontally or vertically across the grid. Which RTP version Ozwin runs is shown only in the game rules, so the game rules are the place to confirm it.
Tumble cascades chain on while each round of wins keeps paying, until no new win appears. The maximum win of Fortune of Olympus, x10,000 the bet, is a ceiling reached very rarely, so read it as the upper limit of the game, not as a likely result.