Crown Coins Dice Slot by Endorphina

Same math as the original Crown Coins, only every symbol has been swapped for a glossy 3D casino die. The reels carry coloured dice in purple, blue, green, red and silver against a near-white drum, with a gold lightning-bolt die and a gold Crown Coin die that shows a cash value stamped right on its face. Wins read left to right on five fixed lines, and the Wild fills in for anything except the two special dice. Those special dice are the whole reason to keep spinning.

Two of them do the work. Gold Dice only ever land on reels one and three, each carrying its own cash prize. The Royal Die only shows up on reel two, and it's the collector. Get three or more special dice across all three reels at once and the Royal Treasury round opens up: the board converts to a 3x3 of Gold Dice, Royal Dice and blanks. You start with three attempts. Every spin spends one, but any fresh special die landing resets you straight back to three, so a board that keeps feeding dice can run a long time.

The Royal Die is what makes it pay. It locks in on reel two for the rest of the round and soaks up the value of every Gold Die present on the reels each spin, stacking those prizes onto itself. When the attempts run dry, every Royal Die total plus all collected Gold Die prizes are added together for the payout. Regular dice are worth 1x to 15x your total bet, and four fixed jackpot tiers sit above that: MIN at 25x, MID at 50x, MAX at 150x, and the ULTRA at 1000x, the four plaques stacked down the left rail in red, purple, blue and green. This is cash collection wearing a hold-and-win coat.

If special dice land on only one or two reels, Lucky Time can step in at random and scatter in enough extras to force the bonus anyway, which is the safety net that keeps near-misses from going to waste. Wins can be sent to the usual Endorphina card gamble, pick one of four face-down cards to beat the dealer and double, up to ten times running. Some operators bolt on a separate progressive mystery jackpot, and a few enable the Bonus Pop buy-in, though neither is guaranteed to be switched on. With no free spins and no base-game payouts worth chasing, the entire game points one direction: get those dice to line up and let the Royal Die do the collecting.