Book of the Golden Dragon Slot by Zillion Games

Three golden books on the reels open free spins, but the free spins themselves are just setup for what comes next. A golden book floats above the grid during the round and randomly absorbs regular symbols - a dragon head, a koi fish, whatever it picks. Every symbol the book collects becomes an expanding symbol for the rest of the feature. Land one of those collected symbols on any position and it stretches to fill the entire reel. By the second half of a decent run, two or three symbol types are expanding, and a single reel hit cascades across all 25 paylines at once.

Hold & Ring runs parallel as the second bonus path. Six bonus coins in one spin trigger it directly, but there's a backdoor - an accumulation meter tracks bonus coins across normal play, and once it hits five, a golden dragon swoops across the grid and drops the sixth coin to force the trigger. Inside, coins lock with bet multipliers (values from 4x up to 36x observed in base game), empties respin, and new coins reset the counter. Four jackpot tiers sit above the reels: Grand at 1,000x for filling all fifteen positions, Maxi at 100x, Major at 30x, Minor at 24x. That Maxi tier is unusual naming - most providers call their second-highest tier "Major," but here Major is third and pays less than a third of Maxi.

The whole game is built inside a Chinese temple gatehouse - green-tiled pagoda roof, red columns, red lanterns hanging from the eaves. A golden dragon with turquoise eyes coils around the left pillar, its tail wrapping the right side. High-pay symbols are golden figurines (dragon, bonsai tree, turtle, koi), and the card values from 10 through Ace are carved in jade green with gold trim. Bonus coins glow amber against dark wooden reel panels. Even the four jackpot labels are color-coded into the temple architecture, sitting under the roof line like decorative plaques.