Slot Review

Colossal Gems

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Rated 99.46/100%

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360%/$220,000

60x wagering

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CasinoLandia > Slots > Colossal Gems

Alexander Yanev | Content Writer

Updated: May 7, 2025

Quick Facts

Provider: ProviderThe Slot Provider is none other than the company who developed the slot. Simply click on the name of the provider to find our more about it!	Habanero
Date Launched: Date LaunchedThe date when this slot game was launched.	28/08/2019
Theme: ThemeTheme is the general genre that the the slot could be classified as. One of the elements that makes slot games appealing, A nicely planned popular theme can potentially skyrocket the popularity of an online slot!	Arcade, Gems, Planets, Space, Space Arcade
Jackpot: JackpotA stand-alone or multi-leveled progressive prize pool that a player can win at a given time, simply by spinning the reels.
Special Symbols: Special SymbolsThe special symbols of a slot are part of its mechanic. Elements such as Wilds, Scatters and regular paying symbols come together to form winning combinations.	Bonus, Multipliers, Re-Spins, Scatters

Review Summary

There's just something oddly satisfying about watching giant gemstones drop onto the reels. Colossal Gems taps into that exact feeling, giving players a colorful, light-hearted slot with some unexpectedly cool mechanics. It doesn’t go overboard, but still keeps things fresh with its respins, oversized symbols, and a free spins round that keeps you locked in. Visually, it leans toward the playful side, but beneath that bright design is a well-structured game with frequent wins, thanks to its low volatility. As for my take? It’s a neat little slot that’s easy to get into and offers more depth than you’d think at first glance.

Slot Information

Return to Player (RTP): Return to Player (RTP)The Return to Player is a statistic that aims to show the player's edge over the casino - the higher this number is the better! We review all slots based on this RTP value so click on the percentage on the right to find our more slots with a similar RTP!	96.72%
Volatility/Variance: Volatility/VarianceVolatility or Variance is meant to describe the winning potential of a slot game: a high volatility will have you win big but no so often, while a low volatility will let you win frequently, but less.	Low
Progressive Slot: Progressive SlotA progressive slot is a slot that keep on growing its total possible winning pool; usually linked by a network of slots. It is also known as a jackpot.
Slot Type: Slot TypeSlots can be categorized as classic, 3D, video slots, etc. Click on the type of slot on the right to see similar types of slots!	Video Slot
Rows: RowsPart of the design of the slot, the rows are the horizontal lines that trigger special features when certain paying symbols fall in place.	5
Reels: ReelsReels are the vertical lines that are build in the slots architecture; together with the rows they help trigger special winning combinations.	6
Paylines: PaylinesPaylines, or betting lines, are the pre-determined links of symbols across the rows and reels of a slot. A slot can have anywhere from just 1 payline or up to thousands paylines!	30
Slot Layout: Slot LayoutThe layout of the slot is the way the slot is built, based on the number of rows, reels and paylines.	6 x 5

Slot Features

Minimum Bet: Minimum BetThe minimum accepted amount that will allow you to spin the reels of this slot game.	$0.30
Maximum Bet: Maximum BetThe maximum accepted amount that will allow you to spin the reels of this slot game.	$6000
Maximum Win: Maximum WinThe total maximum amount that you could win triggering the biggest winning combo.	$360000.00
Progressive Slot: Progressive SlotA progressive slot is a slot that keep on growing its total possible winning pool; usually linked by a network of slots. It is also known as a jackpot.
Auto Play Feature: Auto Play FeatureAuto Play is a built-in function on the slot interface that enables automatic spinning of the slot without the player having to press the Spin button on every spin. Usually, the function can be preset to auto execute a certain number of spins like 20,50, 100, or more. Players can typically define their bet amount and set loss limits before starting Auto Play.
Bonus Round Feature: Bonus Round FeatureThe Bonus game feature are the most interesting and profitable phase of the game that different from the ordinary repetitive gameplay. Usually it is triggered by landing several scatter or bonus symbols at the same time. The biggest wins in a slot are usually triggered during the Bonus game play.
Cluster Pays Feature: Cluster Pays FeatureCluster Pays is a relatively new slot feature that triggers winnings when a given number of same symbols (usually 4 or more) of same type are next to each other on slot’s reels or lines. In turn, these slots do not have a fixed number of paylines.
Megaways Feature: Megaways FeatureMegaways Slots are slots that vary the number of paylines by changing randomly the number of reels during slot play. If successfully triggered the paylines could grow exponentially to over 100,000 and provide massive wins.
Turbo Play Feature: Turbo Play FeatureThe Turbo Play feature allows players to play a given slot much faster than usual by bypassing slower effects in graphics and music. It is preferred by players who are familiar with a given slot and do not want to hear repetitive sounds and moves for a long time.
Available:	Android, IOS, Windows

Pros

Giant Gem Symbols – Unique 2x2, 3x3, and 4x4 symbols bring a nice twist and help rack up wins.
Frequent Respins – Every win triggers a respin, making the base game more exciting.
Free Spins Feature – After a streak of respins, players unlock a bonus round with guaranteed colossal symbols.
Low Volatility – Wins come in steadily, making it ideal for longer sessions without burning through your balance too fast.

Cons

Basic Visuals – While colorful, the cartoonish style may not appeal to players who prefer high-end, cinematic graphics.

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Screenshots

Colossal Gems Low Paytable

Colossal Gems High Paytable

Colossal Gems Base Game

Colossal Gems Regular Win

Colossal Gems Mega Symbol

Expert’s Opinion

225 Articles

As someone who’s tried a fair share of slot games, I find Colossal Gems to be surprisingly fun. It’s not trying to be flashy or complicated—it just does what it does well. The respin mechanic keeps things moving and gives every spin a sense of momentum. I also liked how the colossal symbols build up over multiple respins; it’s a clever touch that adds progression to the gameplay. It’s also nice to play a low-volatility slot that actually feels rewarding without waiting ages for a feature to hit. Honestly, it’s one of those games I’d come back to during a chill session.

9.30 /10 by Alexander Yanev

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Introduction to Colossal Gems

If you’ve ever played a gem-matching game or just enjoy the sparkly vibe of gemstones falling in line, Colossal Gems will feel like second nature. With its light sci-fi touch and arcade-style visuals, it sets a cheerful tone right from the first spin. But beneath the casual surface is a surprisingly clever slot that stacks its features in an engaging way. You’ve got respins tied to every win, and as those wins build, so do the size of the symbols. It’s a simple concept done well, and it manages to hold attention without relying on complicated systems.

Colossal Gems Slot Provider

Habanero

Rated 94.45/100%

353 Casinos | 175 Games

All Casinos

Number of games

175

Country

Sweden

Founded

2012

Slots
Table Games

This slot comes from Habanero, a provider known for its solid balance of fun themes and player-friendly features. They’ve got a reputation for smooth gameplay and varied mechanics, and Colossal Gems falls right in line with that approach. Habanero often designs their games to run well across different devices, and that shows here too. The company’s been in the game since the early 2010s and continues to release titles that focus more on quality mechanics than just flashy presentation.

Colossal Gems Slot Characteristic:

Characteristic	Value
Paylines	30
RTP	96.72% (Varies)
Max Win	x360000.00 Bet
Bonus Game	No
Special Symbols	Wild, Scatter, Mega Symbol
Paid Symbols	6
Free Spins	Yes
Reels	6
Rows	5
Slot Layout	6×5
Technology	HTML5, JS
Platforms	Mobile, Desktop, Tablet
Minimum Bet	$0.30
Maximum Bet	$6000

Colossal Gems Slot Gameplay and Mechanics

Colossal Gems plays out on a 6×5 grid with 30 fixed paylines. The game starts out simple: match gem symbols from left to right across paylines. Where it gets interesting is the respin system—after every win, you get a respin. Keep winning during respins, and the game begins introducing larger symbols: 2×2, then 3×3, and finally 4×4 gems. If you manage three consecutive respins, you’ll trigger the free spins addition, where every spin guarantees a mega-sized gem.

How to Win in Colossal Gems Slot

Step-by-step for getting the most out of this slot:

Set Your Bet Level – Use the buttons beside the spin to pick your bet level (1–10).
Choose Coin Value – Pick a coin amount between 0.01 and 20.00. These multiply with the bet level and paylines.
Use Autospin – If you prefer hands-free play, select between 10 and 500 autospins.
Check the Paytable – Hit the info button (i) to see symbol values and features.
Spin the Reels – Press the main spin button and watch for any base wins to trigger respins.
Chase the Colossal Symbols – Consecutive wins unlock larger gems and, eventually, free spins.

Colossal Gems Slot RTP

This slot comes with an RTP of 96.72%, which is a solid figure compared to many modern titles. That means, over time, it’s designed to return a good portion of wagers back to players. While no slot guarantees consistent returns, a number like this suggests fair play and decent potential, especially when paired with its low-risk profile.

Colossal Gems Slot Volatility

With low volatility, Colossal Gems favors frequent wins, though they’re usually on the smaller side. That doesn’t mean you can’t land a decent payout—it just means you won’t be waiting ages for something to hit. It’s ideal if you prefer games that keep the reels moving and offer regular interaction rather than banking everything on one rare spin.

Colossal Gems Slot Betting Range

The game gives you a flexible betting range, starting from 0.30 all the way up to a maximum of 6000 per spin. You can adjust both the coin value and the bet level, which makes it accessible for both budget players and high-rollers. Whether you're looking to pass time with casual bets or push for bigger returns, the game lets you scale things the way you like.

Colossal Gems Slot Symbols Explained

Regular symbols are all vibrant gems in different colors and shapes. While they’re not tied to classic card symbols or characters, each gem has its own payout value depending on its color and form. The visuals are clean and colorful, leaning into a fun, arcade-like style that keeps things light.

Here's a brief showcase of the special symbols in this game:

Special Symbol	Depicted As	Description
Wild Symbol	Purple Gem	Only appears during free spins; substitutes for all symbols to help complete wins.
Colossal Symbols	2×2, 3×3, 4×4 Gems	These appear during respins and free spins, covering multiple spaces on the grid.
Scatter Trigger	Consecutive Respins	Not a symbol, but hitting 3 consecutive wins triggers the free spins round.

Colossal Gems Symbols

Curious about how each symbol pays out? Here’s a breakdown of each one:

x6 = 360.00

x5 = 120.00

x4 = 8.00

x3 = 5.00

x6 = 180.00

x5 = 80.00

x4 = 5.00

x3 = 2.00

x6 = 80.00

x5 = 40.00

x4 = 3.00

x3 = 1.00

x6 = 60.00

x5 = 20.00

x4 = 2.00

x3 = 1.00

x6 = 36.00

x5 = 10.00

x4 = 1.00

x3 = 0.60

x6 = 10.00

x5 = 2.00

x4 = 1.00

x3 = 0.60

Colossal Gems Slot Free Spins Round

Triggering three wins in a row—each followed by a respin—activates the free spins feature in Colossal Gems. Instead of using scatter symbols like most slots, this one relies on building momentum through consecutive wins. Once you hit that third respin win, you’re awarded six free spins. During this bonus round, every spin includes at least one colossal gem, which can be 2×2, 3×3, or even 4×4 in size. These oversized gems increase the chances of landing multiple paylines at once. Also, the purple wild gem enters play here, helping fill in gaps for potential wins.

Here’s how the free spins round works:

Trigger Condition: Achieve three consecutive wins with respins to activate the free spins.
Free Spins Awarded: 6 free spins are granted once the round is triggered.
Colossal Symbols: Every spin guarantees at least one colossal gem (2×2, 3×3, or 4×4).
Wild Symbol: The purple wild gem appears, substituting for regular symbols.
Retriggering: The free spins cannot be retriggered once activated.

Although you can’t retrigger the free spins during this feature, the combination of wilds and mega-sized symbols gives this round real payout potential—especially with the game’s 30 paylines working in your favor.

Colossal Gems Slot Features

Colossal Gems doesn’t overload you with features, but the ones it includes work together nicely. The flow from respins into free spins, with larger symbols acting as progression markers, gives the game a rhythm that keeps things moving.

Features and Descriptions:

Feature	Description
Respins	Every win triggers a respin; consecutive wins introduce larger gem symbols.
Free Spins	Triggered after 3 consecutive respins; includes guaranteed colossal symbols.
Mega Symbols	2×2, 3×3, and 4×4-sized symbols during respins and free spins.
Autospin	Lets you play automatically from 10 up to 500 spins.
Quick Mode	Turbo button speeds up reel spins.
Bet Max Button	Instantly sets your wager to the maximum amount.

Colossal Gems Demo Version

There’s a demo version of Colossal Gems available, which is perfect if you want to try it out before putting real money in. You’ll get to explore all the features, try different bet levels, and see how the colossal symbols work. It's a nice way to test the waters and get a feel for the game’s pace and mechanics without any risk.

Colossal Gems Slot Compatible Devices

This game works smoothly across all major devices—whether you’re on a desktop, tablet, or smartphone. Built with HTML5 technology, it runs well on both Android and iOS, and the layout adapts to smaller screens without losing functionality. That means you can spin the reels at home or on the go, without needing to download anything extra.

Device Type	Compatibility
	Fully optimized for iPhones and iPads
	Works smoothly on Android smartphones and tablets
	Compatible with desktop and laptop computers
	Optimized for all screen sizes, providing a smooth experience across devices

Frequently Asked Questions (FAQs)

What is the RTP of Colossal Gems?

The Return to Player (RTP) rate for Colossal Gems is 96.72%, which is fairly generous. It indicates how much the slot is expected to return over time, calculated from all bets placed by all players.

What is the maximum win in Colossal Gems?

The game offers a maximum win of 360,000x your bet, although reaching that would require landing high-paying combinations with colossal symbols during free spins.

How many paylines does Colossal Gems have?

There are 30 fixed paylines in Colossal Gems. You don’t need to adjust them—they’re always active.

Does Colossal Gems Slot Offer a Free Spins Round?

Yes. After scoring three consecutive wins through the respin feature, you’ll enter a 6-spin free spins round with guaranteed colossal symbols and an added wild gem.

Can I play Colossal Gems on my portable device?

Absolutely. The game is completely optimized for mobile and tablet devices. It runs well in browsers on both Android and iOS, without needing to download any apps.

Smartphones (Android & iOS)
Tablets
Laptops and desktops

Is there a demo version available for Colossal Gems?

Yes, many casinos and game sites offer a free demo variant, where you can try the slot without wagering real money.

What are the betting limits in Colossal Gems?

Bets range from 0.30 to 6000 per spin. You can tweak both the coin value and the bet level to find your ideal stake.

What features does Colossal Gems offer?

Key features include:

Respins after every win
Free spins with colossal symbols
Wilds during the bonus round
Mega-sized symbols (2×2, 3×3, 4×4)
Autospin, quick mode, and a bet max button

Where can I play Colossal Gems?

You can find it at casinos that feature Habanero slots. Most reputable platforms will list it under their video slots category.

What is the volatility level of Colossal Gems?

It’s a low volatility slot, which means smaller but more frequent payouts are the norm.

What symbols should I look out for in Colossal Gems?

Keep an eye on the colossal gem symbols during respins and free spins, as well as the purple wild that appears only in the bonus round. These have the highest payout potential.

Concluding Thoughts

All in all, Colossal Gems keeps things simple but not shallow. It’s the kind of slot that grows on you the more you play it. With steady wins, easy-to-follow mechanics, and a fun theme, it strikes a nice balance between chill and engaging. The respin chain and colossal symbols give it just enough depth without overcomplicating anything. For players who enjoy lighthearted slots with meaningful features, this one’s a solid pick.