Colossal Reels Slots Catalogue

What are Colossal Reels Slots?

Colossal Reels Slots are innovative online slots that offer a dynamic gaming experience thanks to the way the reels are set up. You can immediately recognise a slot belonging to the series thanks to the way it looks. There is a first reel set with a 5×4 grid and a second with a 5×12 grid. But there’s more to this in the Colossal Reels series, keep reading and find out all about it!

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Complete List of Colossal Reels Slots

As you might imagine, there is a lot of very special online slot out there running on the Colossal Reels engine. This is because it is highly rewarding and offers a big win potential thanks to stacked wilds and up to 100 paylines. Now let’s see a complete list of Colossal Reels slots games you can play online.

Keep in mind that you can read our full review of each game on this list. On top of that, you will also find each online slot in the list that follows in free demo mode. This way you can try them with no need to open a casino account or deposit any sum of real money.

If, on the other hand, some of these games are very attractive to you, we have selected a list of top slots sites where you can play for real money. These are safe sites for your gameplay, online casinos you can trust with your real money deposits. And now, this is the full list of Colossal Reels slots.

Game RTP Max Win N. of Paylines
Epic Monopoly II 96.01% 1500x 100
Giant’s Gold 96.21% 100.000 100
Forbidden Dragons 95.91% 500x 100
King’s Honour 97.75% 500x 100
Kiss: Shout it Out Loud 95.90% 500x 100
Li’l Red Riches 95.94% / 100
Lunaris 96.04% £/€250.000 100
Rainbow Riches Reels of Gold up to 98% / 100
Spartacus Gladiator of Rome 95.94% 500x 100
Zeus 1000 96.00% 500x 100

WMS Colossal Reels Slots

As you know, it is very important to understand who creates our favourite new online slots. This is because while you play online you need to make sure you are playing only with high-quality, trustworthy games. Colossal Reels is a series of slots developed by WMS/ Williams Interactive, one of the most respected slots developers in the industry.

The good reputation of this slot provider comes from many years of solid releases, first in the world of land-based casinos and after in the innovative world of online games. In both cases, WMS has delivered trustworthy games that most slots fans love. Other than the famous Colossal Reels slots, they have also released some of the most popular titles in the Megaways™ series, like Montezuma Megaways™ and Raging Rhino Megaways™, proving their attitude for creating high-quality innovative games.

Now let’s dive deep into this series, which has started for WMS as a feature for land-based slots, and continues now in the world of online slots. The appealing look and feel and the huge win potential of Colossal Reels slots created hype around them… now let’s see what this is all about in practical terms.

Special Features

colossal reels slots basegame

Colossal Reels Slots are an innovative kind of online slot game, that offers a more dynamic gameplay thanks to a double set of reels. Slots offering this feature are very easily recognisable – on the screen you will see two sets of reels, with a different grid.

The looks of the game are really spectacular, the whole gaming experience can be even a bit disorienting at first. Yes, there will be quite a lot of symbols spinning on those two reels. Let’s see how these two reels work:

  • Main Reel Set: this is usually a set of reels with a 5×4 configuration. It is set on the left-hand side of the reels.
  • Colossal Reel Set: this one has a 5×12 grid, and its the more imposing set on the right hand side of the gaming area

What is quite intuitive here is that this principle: the more paylines, the more chances to hit a win. Surely these slots have a high win potential thanks to 100 paylines across the gaming area. As per usual, cash prizes are paid according to the payline and the bets you have set up. However, keep in mind that you will cash in the highest pay only. On top of that, the two sets of reels are not connected, meaning that paylines do not continue from the main reel to the colossal one.

Special Stacked Wilds

stacked wilds

On top of their innovative reels configuration and the stunning number of fixed paylines, these slots have a reputation among fans for their Stacked Wilds. This is one of the moments when the two reel sets really work together, creating a synergy that improves your chances of hitting a win.

On a completely random basis, you will see a stack of wilds appearing on the main reel set. These wilds are then cloned and moved to the second reel set, where they will replace symbols of a full reel. This might result in epic wins!

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Pick your favourite Colossal Reels Slot

Colossal Reels are a very popular series of online slots. High-quality games that offer dynamic gameplay thanks to the double set of reels, stacked wilds and free spins. Not sure where to start? Have a look at our top 5, or at the full list you find on our page and pick the one that is most appealing to you.

pick your favourite colossal slot

Try it in Free Demo Mode

Now that you have picked your slot and read our full review, we recommend you try the slot for free with our demo. You find a demo of each slot in the series – just visit its specific review page. By playing free, you can easily realise if you like the game or not, and how special features work.

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Choose your Online Casino

Each slot we review comes with a list of the best online casinos for enjoying it real money. The online casinos you see on each page have been tested by our team of experts for their trustworthiness and for the quality of the gaming experience you can get. Goes without saying, they are licensed, legit and 100% safe.

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Get your Casino Bonus

You have compared offers among the best casino sites out there, and you have picked the site that appeals to you the most. Keep in mind that every single site has different offers and different ways of getting them. Usually you have to make your first deposit in order to get your welcome bonus.

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Enjoy your bonus and have fun with Colossal Reels Slots!

Now you have chosen your favourite slot and your favourite casino. You have subscribed and deposited, and of course you got your bonus. It’s all ready for playing your favourite online slot real money with bonus!

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Top 5 Colossal Slots

The number of slots in this series is constantly increasing, while they get more and more appreciated by players. Here is a selection of our favourite ones, our Top 5 Colossal Reels Slots. We highly recommend you check them out, and have a look at our full reviews. On top of finding all special features explained, you can also enjoy a free demo version of these innovative new slots. Let’s go!

5 – Lunaris

lunaris colossal slots

We are very fond of slots that have a strange, nightly look and feel. This is definitively the case for Lunaris, a slot that most people do not know but we think it’s much worth your time. If you are looking for a game that unfolds in moonlight, whit caterpillars, moths and constellations as characters of some unexpected stories.. well this is the game for you.

4- Giant’s Gold

giant's gold basegame

The theme of a giant’s treasure upon the clouds, that you can reach thanks to an overgrown bean plant is a much popular one in the world of online slots. Here you can add a bit of a spicy feelings thanks to some very good looking symbols (yes, winking) and a new slot mechanic that offers a higher win potential thanks to 100 fixed paylines.

3- Epic Monopoly II

epic monopoly II colossal reels

We really like everything Monopoly-related. We know there is so much of it in the online gambling world, but hey! Thanks to the high-profile theme, all of it is great. and here you can finally experience of all that Monopoly feeling in the new format of colossal reels (if you are looking for some more excitement, we recommend Monopoly Slingo!) This game, as per all Monopoly ones, is more complex than others and it involves further special features compared to the usual ones you can find in Colossal Reels slots.

2- Rainbow Riches Reels of Gold

rainbow riches colossal reels basegame

This is the perfect slot for Rainbow Riches lovers, as the game merges the Colossal Reels mechanic and one of the most famous franchises in the online slots world. Rainbow Riches is back, now with a double set of reels and new special features. However, SG Digital and Barcrest, the developers of this game, have not given up on the

1- Spartacus Gladiator of Rome

spartacus gladiator of rome

Spartacus Gladiator of Rome is the Colossal Reels slot by definition. When thinking of this family of games, it’s the first that comes to mind and the one we feel we would always spin, no matter what. This is because this slot was the first breakthrough for the series. It has set standards for other games to follow, including the double set of reels, Stacked Wilds and 100 paylines. On top of that, the slot is designed around the theme we like best.. gladiators and colosseums!

Our Verdict

We really like Colossal Reels slots because of their power in creating dynamic gameplay. These online slots have high RTP and medium-high volatile models and offer 100 paylines or more. This is thanks to the two sets of reels on your screen, the main set with a 5×4 grid and the Colossal Reels set with a 5×12 grid. On top of that, these slot games offer extra special features and reel modifiers that create the perfect setting for a fantastic gaming experience.


You can play all slots in the Colossal Reels series in one of our recommended online casinos. These top slots sites have been tried and tested by our team of experts and are 100% safe. On top of that, they offer the best deals in terms of bonuses and promotions. These are our favourite ones right now: All British Casino, Fun Casino, and Race Casino.

There are several slots in the Colossal Reels family. Our team of slots experts has tried all of them and has come up with a list of absolute favourites. According to them, the best slots in the series are Spartacus Gladiator of Rome, Rainbow Riches Reels of Gold, Epic Monopoly II, Giant’s Gold and Lunaris.

Yes, you can play these slots for free with demo. You can find a free demo of each Colossal Reels slot on our review pages, no need to sign up to any casino site or commit to a deposit in real money. You can try all Colossal Reels slots for free for as long as you like.

Yes, of course. You can compare the offers of the best slots sites for real money and see what is the best bonus for your gaming style. We recommend you sign up to a casino that offers generous match bonuses on your first deposit, free spins bonuses or cashback bonus on your real money play.

Colossal Reels slots are developed by WMS, also known as Williams Interactive. Some are also developed in collaboration with SG Digital or by Bartcrest. All of these providers have a fantastic reputation in the online slots industry and are known for releasing innovative and secure slot machines.

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