Check which RTP version runs before playing
Each spin lands a new arrangement of symbols on the Megaways grid, and the reels give no sign of when the bonus round will start. How often it comes is not known in advance. Some sessions bring several triggers close together, others bring none at all. The result of one session is random, whatever the RTP.
Each spin on the grid follows the RTP version active on that site, and that version is shown only in the game rules. Read that section before the first spin, because the two versions of this title differ by a small margin. The paytable uses an A$1 bet, so each payout reads directly against the stake.
Tumbles, multipliers and free spins can add up within one bonus round, but the total is capped at x5,000 the bet. That ceiling is reached very rarely. Treat the figure as the upper limit of the game, not as an expected outcome.