Cathedral 9 Slot Review

Slot Review

Written by: James J. Hetrick, Senior Content Editor

Last Updated: March 5, 2026 at 9:05AM (Leo K. Pickering)

Read Time: 7 min.

Slot Overview

When ELK Studios invests time into creating a special atmosphere, you know you are getting one. Cathedral 9 is a slot that mesmerizes players as they enter the place of mystery.

The game has multiple layers of features that make sure there are often some events that unfold on the screen. Central to gameplay is the Scatter Pays mechanic, and whenever it gets triggered, it’s followed by cascades. Two coffins are the key elements that trigger the nudging process. But there’s a whole Feature Reel that awards a variety of boosters in response to cascades.

Some of the slots that feature a similar foundation, come with multipliers. In Cathedral 9, multipliers are a high value prize that isn’t awarded left and right. They pack incredible power. When you upgrade to the Super Bonus, this power is on full display. But the glimpses of it are witnessed even in the main game.

Theme

Religious themes made their way into the online gambling world, which is an interesting phenomenon. That’s the trend that probably few have predicted. But the reality is, studios use it a lot recently, and players seem to be enjoying it. However, it hasn’t just yet become a mainstream theme. So, there’s still a sort of novelty to it.

There are multiple ways studios usually go with this theme, from comic to frightening. Cathedral 9 is mysterious more than anything. Yes, the game is set in this religious building, but it feels like you enter the place to solve some mysteries that were buried there centuries ago.

Cathedral 9 Slot Features

ELK Studios decided to use the Scatter Pays + Cascades combinations as the game foundation. This means that any payout can insert a fresh set of icons across an entire playground and trigger more cascades. On top of that, the studio has added a whole bunch of features so that every time you play Cathedral 9 slot in the demo, it’s quite an experience.

Scatter Pays + Cascades

Winnings are paid whenever 8+ matching artefacts land anywhere on the 6×5 playground. Any win, even the smallest one, is a thrilling event as it can trigger one of those incredible sequences this game can deliver. That’s probably one of the greatest assets of this slot.

These epic chains of events are possible thanks to Cascades. Because any win is followed by an explosion that removes winning combos. Gravity pulls other icons down to fill the gaps. That’s a popular mechanic but in Cathedral 9 online slot, it feels more valuable, and you’ll soon learn why.

Feature Reel

The playground is split into two parts. The main area is 6×5, but there’s a 6×2 additional grid that sits on top of it. This area is called Feature Reel, and it can have a different set of symbols that activate different modifiers.

When there’s a Cascade, those feature icons fall to the main grid and activate. That’s the reason Cascades here are so precious. There shouldn’t be multiple similar feature icons. One is all you need to get it triggered.

• Explosion. Symbols from reels are removed. The column where the symbol has landed and its adjacent columns are affected.
• Collect. This Cathedral 9 slot feature essentially creates a symbol that includes multiple similar icons. Here’s how it works. One payout icon is selected, and all similar icons currently in view are collected. So, you’ll see a single position symbol with a number that shows the symbol count.
• Wild. It performs its traditional role of substituting regular icons.

There are also other feature symbols like coffins that appear on the Feature Reel. And even blockers serve a purpose that we’ll discuss later in this review.

Cathedral 9 Slot Mystery Coffins

There are two special symbols called Mystery Coffins. Those that come with multipliers are called Super. Both regular and Super Mystery Coffins are 5 row high, and they all reveal a similar symbol.

Demo Cathedral 9 online slot to see that they don’t always simply disappear. If they touch the bottom of the grid, which leaves them fully revealed, they activate. That’s when all the most exciting things happen. Because from then on, players sort of get free spins. These Coffins nudge one position down, which creates space for new winning combos.

When Super Mystery Coffins activate, they award their multiplier. This multiplier can be massive, of up to x1,000. While testing Cathedral 9 slot game in free mode, I didn’t see x500 or x1,000 multipliers. The highest I got was x25. But x50 and x100 also seem reachable. Whereas the top two figures must be extremely rare.

Entombed

This is another exciting feature. Unlike Mystery Coffins, it’s very simple. When an entire Feature Reel is occupied by an entombed icon, the main grid becomes one massive symbol, which is essentially 30 of the similar regular size symbols. This looks and sounds epic, but there won’t be some crazy payouts. The most expensive payout icon awards x50 prizes for 25+.

Holly Collect

Cathedral 9 is an exciting slot machine, but with this feature, the studio added another layer of excitement. When you play the slot, you’ll see that blockers that fall from the Feature Reel are collected. And at some point, the Holly Collect feature gets activated, and players receive between 3 and 6 Mystery Coffins.

Cathedral 9 Slot Bonuses

3-6 Bonus icons get you a bonus activation. Each of the symbols that have triggered the feature, award between 2 and 4 spins so that the max number free drops is 24. Every single Bonus symbol during the feature adds more spins.

Free spins don’t end too quickly even when you have just a few of them. Because rounds often produce a series of cascades and activate nudging. That’s how even 6 free spins become an exciting experience.

Persistent Global Multiplier

Unlike the main game, when you play Cathedral 9 slot bonus, multipliers have a lasting effect. When they land, their value is added to the Global Multiplier that grows infinitely and doesn’t reset between free drops. However, there will be times when this feature just isn’t able to get going.

Other than that, the bonus is played pretty much the same as the base mode. However, you’ll see that above the main playground there’s a row with nine artefacts. When you land a win, a corresponding artefact icon is filled. When all nine artefacts are collected, the best feature gets unlocked.

Cathedral 9 Slot Super Bonus

That’s where you want to be. And to trigger the feature, players must go through a regular bonus first. As mentioned above in this Cathedral 9 game review, 9 artefacts collected unlock the main slot feature. The reason it’s so exciting is because there will be only Super Mystery Coffins. And you know that when they get involved, the winning potential is through the roof.

Cathedral 9 Slot RTP, Volatility and Max Win

The slot comes with the 94% RTP and 7/10 volatility. Usually, expected return slightly changes when the bonus buy options are enabled. But this time, it stays at 94% whether you pay x2.5 for the Bonus Hunt or x500 for the Super Bonus or anything in between.

Hit frequency is 24.9%, which is almost 1 in every 4 spins. The max win is x25,000. And you know for sure when this scenario is the most likely, and what features you need to get there. Those epic coffins with multipliers seem to be the only tool that can help land the top prize.

Conclusion

Play Cathedral 9 free slot and give it just a bit of time to show what the game is capable of. There’s a high chance that you’ll enjoy the experience. The slot offers an incredible atmosphere and amazing gameplay.

It doesn’t rely on one super feature that can suddenly drop a massive payout. The slot builds the momentum and can eventually deliver insane winnings. But its biggest asset is those quite frequent waves of activity when you get a lot of things going on. And they don’t even have to be very lucrative runs, because you just enjoy the action.

Slot Rating

Cathedral 9 Symbols and Paytable

25+	x50
16+	x20
10	x3
9	x2.5
8	x2

25+	x25
16+	x15
10	x2
9	x1.75
8	x1.5

25+	x20
16+	x10
10	x1.5
9	x1.25
8	x1

25+	x15
16+	x7.5
10	x1.25
9	x1
8	x0.75

25+	x10
16+	x5
10	x1
9	x0.75
8	x0.5

25+	x5
16+	x2.5
10	x0.35
9	x0.3
8	x0.25

25+	x4
16+	x2
10	x0.3
9	x0.25
8	x0.2

25+	x3
16+	x1.5
10	x0.25
9	x0.2
8	x0.15

25+	x2
16+	x1
10	x0.2
9	x0.15
8	x0.1

Wild

Screenshots