Crystal Treasure Slot by Onlyplay

Towering crystal formations in pink, amber, and deep blue bracket the grid on both sides, rising out of a canyon floor that catches warm sunset light across its rocky faces. The symbols are all gemstones - brilliant-cut rubies, pear-shaped sapphires, faceted emeralds, round ambers, and pink diamonds, each rendered with enough light refraction to look like actual stones rather than flat icons. Forty-nine of them fill the board at once. Any eight matching gems anywhere on that grid count as a win, no paylines involved, and matched symbols vanish to let everything above cascade down into the gaps. Chain reactions keep going until nothing new connects. The 200x buy bonus drops you straight into free spins, skipping the base game trigger that needs four or more Crystal Castle scatter symbols to land simultaneously across those 49 positions.

Free spins are where the multiplier math lives. Dedicated multiplier symbols appear only during the feature, carrying values from x2 up to x100. Land more than one and they sum - two symbols showing x5 and x25 combine into x30 applied to all wins in that round, not just one cluster. That summing mechanic is what pushes the ceiling past 6,800x despite a fairly standard scatter-pays base game. The Crystal Castle scatter itself is a golden-turreted palace that glows cyan at its windows, and it disappears entirely once free spins start - no retriggering from additional castles, just the multiplier symbols and cascading gem clusters doing the work until the feature ends.