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Prism Cascade

CascadesLively

Demo · 20,000 credits

Opening the file…

18+. For entertainment only. Every round starts with your press — there is no autoplay. Stamps and credits have no cash value.

Gems tumble through prisms, and clusters clear the way

Department: Cascades
Type: Cascade slot
Temperament: Lively — Quieter stretches, livelier features.
Stakes: 10–1,000 per round
Features: Cluster pays, Tumbling symbols, Gems
Filed: 16 October 2026

Notes from the desk

Let a cascade finish before deciding on your next press.
The paytable lists cluster sizes and their values.
Our Bulletin has a short guide to how cascades work.

How to play

Choose your stake and press Drop. The board fills six columns by five rows of symbols.

Any group of 5 or more identical symbols that touch side by side or up and down is a cluster. Diagonal neighbours do not count.
Every cluster on the board pays at once, then it vanishes. The symbols above fall into the gaps and new symbols drop in from the top.
If the new board holds another cluster it pays and tumbles again. Each of these steps is one cascade, and they carry on until no cluster is left — all for the one stake.
The Prism scatter symbol never forms a cluster; it counts towards bonus drops instead.

Paytable

Pays are multiples of your stake, by symbol and cluster size (number of touching symbols).

Cluster pays, times the stake
Symbol	5–6	7–8	9–10	11–13	14+
Sapphire	3×	8×	20×	50×	150×
Ruby	2.5×	6×	15×	35×	90×
Emerald	2×	5×	10×	20×	50×
Amethyst	1.5×	3.5×	7×	14×	35×
Topaz	1×	2×	5×	10×	28×
Fire opal	0.7×	1.7×	3.5×	9×	20×

Features

Bonus drops. When the board settles with 4 or more Prism scatter symbols in view, you get 8 bonus drops at no further stake. Each one is played with its own press.

Inside a bonus drop the multiplier starts at 1× and rises by 1× with every cascade: the first cascade pays 1×, the second 2×, the third 3×, and so on. It goes back to 1× at the start of the next bonus drop.
4 or more Prism scatter symbols during a bonus drop add 5 more bonus drops, up to 50 in one round.
Bonus drops use their own symbol mix, in which the lower symbols turn up more often, so clusters form more readily than in a paid drop.
Everything from the paid drop and its bonus drops is added up and shown as one round total.

Good to know

Each cluster pays in whole Stamps (or demo credits), rounded down.
One round returns at most 5,000 times the stake.
Every drop is drawn at random in your browser and does not depend on earlier rounds. There is no autoplay; nothing happens until you press.
If you leave the page during bonus drops, the drops still owed are played out for you and added to your balance.
With animations switched off, each cascade resolves without movement.
Stamps and demo credits are for play only. They cannot be bought, exchanged or turned into money.

About Prism Cascade

Sapphires, rubies, emeralds, amethysts, topaz and fire opal fall through glass prisms that split the light into rainbows. Each gem has its own cut, square, heart, oval, triangle, round and hexagon, so they are easy to tell apart on the 6×5 grid even at a glance.

There are no paylines here. Matching gems that touch each other form a cluster, and a cluster large enough pays according to its size. Paying gems then vanish, the ones above drop down, and fresh gems fall in from the top. If that creates a new cluster, it pays too, and the tumble carries on until nothing more connects. One press can therefore produce several steps.

Four or more glowing rainbow prisms anywhere open bonus drops. During those, a multiplier climbs with each cascade, so a long chain of tumbles counts for more the further it runs. Each drop starts with your press.

Like every game at the Bureau, Prism Cascade is free to play and runs entirely in your browser. Results come from your browser's cryptographic random number generator, the paytable is published in the dossier, and a return below your stake is shown as what it is: part of the stake back, not a win. How games work.

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