Ultra Cluster Kingdom

Ultra Cluster Kingdom Overview

Ultra Cluster Kingdom is a cluster-pays slot from GameArt, played on seven reels whose height changes from 4 to 8 rows. Wins come from groups of 5 or more matching symbols touching horizontally or vertically, and winning clusters cascade away to make room for new symbols. The game was released on 24 September 2024.

GameArt rates the volatility as high. The RTP (96.22%) and the 5,000x maximum win come from Slots Launch, as neither GameArt nor SlotCatalog publishes them. Bets run from 0.20 to 200 per spin.

A Castle Above the Clouds

The grid stands in front of a fairy-tale castle, with a waterfall running down the stone steps below it. The high symbols are three crowns – gold, green and purple – each on a hanging banner. The low symbols are cut gems: a red ruby, a blue sapphire, a green emerald and a purple amethyst. The Scatter is a golden castle tower.

The reels are split into positions of different sizes, so on any spin some symbols stand twice as tall as their neighbours. That is how the row count moves between 4 and 8 from reel to reel.

The Paytable

The info pages print the prizes in cash for the current bet, in steps from 5 symbols up to 15 or more. At a bet of 3.00, a cluster of 15+ gold crowns pays 600.00 – 200x the stake – while 13 or 14 of them pay 60.00 (20x) and the minimum five pay 3.00 (1x).

The green crown tops out at 150.00 (50x) and the purple crown at 120.00 (40x). Among the gems, 15 or more rubies pay 90.00 (30x), sapphires 60.00, emeralds 45.00 and amethysts 30.00 (10x). The jump from 14 symbols to 15 is the biggest step in every column: for the gold crown, it multiplies the prize by ten.

Cascades and the Multiplier

A MULTIPLIER panel sits in the top-left corner. It started at x1 in our base game, and during one chain of cascades it climbed to x3, while a string of clusters built up a total of 51.00 on a 20.00 bet – 2.55x.

Smaller results were typical of the base game: other spins in our session paid 6.00 and 14.00 on the same 20.00 stake – 0.3x and 0.7x.

Free Spins

Three or more Scatter towers award 10 free spins. According to GameArt, the Scatters also pay in the base game, and in our capture the three towers that started the round paid 9.00 on a 3.00 bet before the “Congratulations, you won 10 Free Spins” screen appeared.

In the free spins the multiplier does not reset between spins, so it keeps growing through the round. On spin 4 of 10 it already stood at x5, and the round total had reached 51.41 – about 17x the bet. Three or more Scatters during the round add another 10 spins.

Buy Bonus

The gold BONUS coin on the left opens the Buy Bonus panel. It offers one option – free spins started by three or more Scatters – at 100x the bet: 300.00 on a 3.00 stake.

The round we bought began from a balance of 200.00, and when we opened the info pages after it, the balance read 370.85. That is a return of about 170.85, or 57x the bet – a little over half the price of the buy. One round is not an average, but it is a reminder that a 100x buy on a high-volatility game can easily fall short.

The Numbers to Keep in Mind

An RTP of 96.22% is slightly above the industry average of around 96%, and the high volatility means long quiet stretches are part of the design. At the top stake of 200, the 5,000x ceiling would be worth 1,000,000 in a single round.

The paytable explains where that volatility comes from. The smallest clusters return the stake or less – five gold crowns pay exactly 1x and five purple crowns only 0.4x – so the base game leans on cascades to string several wins together, and the real value only arrives once the multiplier has climbed in the free spins. A player who stops after a handful of spins will mostly see the small end of the table.

Who Should Play It

Ultra Cluster Kingdom suits players who enjoy cluster slots and like watching a multiplier build. The gem-and-crown theme is simple, and the paytable rewards patience: most of the value sits in clusters of 15 or more.

Where to Play Ultra Cluster Kingdom

You can try this game on Casino007 Online Casino. There’s a unique casino bonus offer of 400% up to £1200 for a limited time.

Ultra Cluster Kingdom was listed in all six of our partner casino libraries when we checked on 24 September 2026.