Chests of Cai Shen Slot by Pragmatic Play

Three color-coded bonus coins appear during regular spins - green, red, and purple. Each gets deposited into its matching chest above the reels. When a coin lands and gets collected, it randomly triggers the Chest Respin feature with that chest's specific modifier active. Multiple modifiers stack if the trigger includes more than one chest color.

The green Prosperity chest upgrades coin values. After each respin, up to three Money symbols already on screen get their value bumped by a random amount. The red Double chest duplicates the entire playing field, running the respin round across two 5x3 grids simultaneously - effectively doubling the positions available for Money symbols to land. The purple Longevity chest adds staying power, starting the round with 4 respins instead of 3 and resetting to 4 (not 3) whenever a fresh Money symbol hits.

Money symbols during the respin carry values from 0.6x up to 30x total bet, plus fixed jackpot prizes: MINI at 10x, MINOR at 20x, and MAJOR at 150x. The GRAND jackpot pays 5,000x total bet but requires filling every position on the grid with Money symbols. Each new Money symbol resets the respin counter, so the round keeps going as long as symbols keep appearing.

The buy options split between a 50x entry that activates 1, 2, or 3 random modifiers, and a 100x Triple Chest entry that guarantees all three modifiers run together. Stacking green upgrades on a red double grid with purple's extended respins produces the strongest possible setup for chasing the GRAND.