Sugar Rush is a seven-by-seven cluster slot from Pragmatic Play. Wins form from five or more matching symbols touching horizontally or vertically, and the positions where wins happen build multipliers that persist for the rest of the spin.
Five or more identical symbols connected side by side count as a win. There are no paylines and no fixed shapes, so a cluster can wander across the grid in any form as long as the symbols touch. Winning symbols are removed and replaced by new ones falling from above.
Every grid position that takes part in a win gets a multiplier spot. Each further win on that same position doubles it: two, four, eight, up to one hundred and twenty-eight. These spots stay for the duration of the spin, so a long tumble sequence over the same area of the grid compounds quickly. This mechanic, not the base symbols, is where the game's ceiling comes from.
Three or more scatters award free spins, and the crucial difference is that multiplier spots are not cleared between spins — they accumulate across the whole feature. A round that starts slowly can end with a heavily loaded grid.
Published RTP is 96.5% with high volatility. As with any high-volatility game, the average is delivered through rare outcomes. Expect long stretches with little return; that is the design, not a malfunction.
A twenty percent higher stake increases scatter frequency. It brings the free spins round sooner on average but costs proportionally more, and does not improve the long-run return.
Playing the demo for a few hundred spins shows the real rhythm of the game far better than a description does, and costs nothing.