After a win the winning symbols vanish, those above fall into the gaps and new ones fill from the top. Each further win in the same round pays more: double, then triple, then five times.
Symbols that tumble over the weir
On a tumbling-weir landing one spin can pay several times over. Every symbol that formed part of a win is cleared away, the symbols above slide down and fresh ones drop in to fill the reels.
If the refilled reels make a new win, it pays at double. The third win in the chain pays at triple, and every win after that pays at five times, until a refill brings nothing new and the round ends.
A worked example. A first win of 4 credits, then a tumble worth 3 and another worth 2, pays 4 + 6 + 6 = 16 credits for the round.
