Play Rumble Ratz Megaways Slot

Rumble Ratz Megaways is a volatile animal-themed slot from Kalamba, and the dynamic grid maxes out at 6x6 reels with 46,656 win ways. K-Cash prizes accumulate above each reel via K-Cash symbols, and K-Cash prizes are won from maxing out reels. Prizes keep accumulating in the bonus round, and you can also rack up a total win multiplier up to x10. The max win is 5,000x your stake, and you can check our full review below the demo game.

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User Rating: 7.5/10 (2 votes)

Provider:Kalamba Games
RTP 🔗: 96.21% RTP Ranges!
Variance: High
Max Win: x5000.00
Betways: 46656
Release Date: 2022-08-12 [ i ]
SlotRank: N/A
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Online Casinos where you can play Rumble Ratz Megaways

We have scanned 11 casinos in US New Jersey, and we have not found Rumble Ratz Megaways on any of them at the current moment.

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Rumble Ratz Megaways slot Big Win May 2024

Kalamba Games' Rumble Ratz Megaways doesn't seem to lose relevance among players, who up to date keep grinding for a chance to win big. Some succeed, like the one who got close to the game's max win on the 2nd of May, winning a staggering 4,800x his bet. From his tiny 0.25 euro bet, he won over a thousand!

What's most impressive, he did not need any features or bonuses, as all happened in a single base spin. As he was spinning the reels, a massive 6-of-a-kind combination of the top-tier rat symbol dropped. A win across 960 paylines was achieved and the player received an extra 1,200 euros on his balance.

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Rumble Ratz Megaways Review

It’s well established by now that Kalamba Games like to do things their own way, and Rumble Ratz Megaways is a perfect example of that trait. It’s not like any other Megaways engine game out there, not least since the grid comes across as static most of the time. K-Cash symbols are needed to expand the reels one position at the time, and 46,656 is the most win ways you can hope for.

Maxing out reels awards whatever K-Cash prize has accumulated above it. The rats are busy in their cheese-stealing operation, while an angry cat is sneaking around trying to catch them. The audiovisuals are decent enough for an unusual theme, and the bonus round is all about accumulating cash prizes by resetting the spin tally and building the total win K-Cash multiplier.

Rumble Ratz Megaways Slot - Reels Screen

Rumble Ratz Megaways Slot Features

The premium rat symbols pay between 3 and 5 x your stake for 6 of a kind wins, and the cheese Wild symbol substitute for pay symbols to help complete wins. Wilds can land on reels 2 to 5 in the base game, and reels 2 to 6 in the bonus round.

You always get at least 4,096 win ways, but the megaways don’t change randomly per spin as you might be used to. Instead, you get blocker tiles covering the upper parts of the reels, and K-Cash symbols that are collected may also unblock a position. K-Cash symbols accumulate prizes above each reel, and landing a K-Cash reset symbol when a reel is maxed out at 6 positions awards the cash prize. This also resets the reel to 4 open positions again.

The Bonus Round triggers from 3+ scatters, and you also win up to 18.75x from the triggering spin depending on how many scatters you landed. You win 3 starting free spins either way though, and the reels start out with 2 positions blocked per reel. One blocker is removed per K-cash symbol that lands, and the K-cash value is also added to the above-reel prize.

The respins tally is reset to 3 again for each blocker tile you remove, and maxing out a reel by removing both blocker tiles progresses you along the multiplier meter. It starts at x1, and can go as high as x10. When you run out of spins the K-Cash prizes are summed up, and then the sum total is boosted by the K-Cash multiplier you have achieved.

Non-UK players, and anyone eligible, can take advantage of the HyperBonus feature. It comes with 3 bonus buy options, and you can pay 60x, 100.4x or 140.6x your stake to get 3 free spins with K-Cash multipliers that can go as high as x4, x7 or x10, respectively.

The 200 Spins Rumble Ratz Megaways Slot Experience

You get a decent taste of the base game, before we purchase the top-tier bonus round at 1:16 into the 2:55-minute highlights video. As you probably have gathered, the feature didn’t last for all that long. However, you can still see for yourself how we fared by hitting the play button below.

Review Summary

It’s hard not to think that Kalamba could’ve saved whatever fee they paid for the Megaways license, as Rumble Ratz Megaways is so different from what most associate with this engine that it’s almost unrecognizable. This is good in one way, of course, as the game most certainly sticks out from the crowd. However, you get static reels most of the time, with occasional upgrades via K-Cash symbols.

The K-Cash prize system keeps you busy in the base game, but it will seldom amount to anything too significant. Everything is taken up several notches in the bonus round though. At least it can be, depending on what kind of multiplier you achieve. Sometimes the feature is over in a blink, other times it keeps building hopefully all the way to the 5,000x win cap. This is probably not a Megaways release for everyone, but full marks for daring to be different.


  • K-Cash symbols remove blocker tiles
  • K-Cash prizes accumulate above each reel
  • Max out reels to win the K-Cash prize above
  • FS w/ multiplier upgrade system up to x10


  • The 5,000x potential is below average for this engine
  • Beware of adjustable RTP ranges

If you enjoy Rumble Ratz Megaways Slot you should also try:

Machina Megaways - is the first and only previous Megaways release from Kalamba, and it comes with up to 46,656 ways to win. You can land 3 different jackpots in all stages of the game, and the bonus round comes with a 26,600x potential. The futuristic cyborg theme is nicely done, so you might wanna check it out.

Pushy Cats - is a feline-focused release from Yggdrasil, and you get sticky wilds respins when wilds land. This may take you all the way to the bonus round, which comes with bouncer modifiers and walking wilds. The max win is 20,000x your stake, and it’s one to try if you like oddball games.

Pile 'Em Up - is a nintendo-style release from Snowborn Games, and the magnet symbol collects coin values that may also be boosted by an increasing multiplier. You get more of the same in the bonus round, and the max win is 7,500x your stake.



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Buy Bonus Menu
Win Screen 1. Rumble Ratz Megaways slot
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Win Screen 2. Rumble Ratz Megaways slot
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Rumble Ratz Megaways Slot FAQs

What is the RTP of Rumble Ratz Megaways?

The top-tier Rumble Ratz Megaways RTP of 96.21 % is a tad above average. Keep in mind however, that this release comes with customizable RTP ranges.

How volatile is Rumble Ratz Megaways?

This is a highly volatile installment from Kalamba Games, and you can therefore expect a bumpy ride.

What is the biggest win possible?

You can win up to 5,000x your stake in Rumble Ratz Megaways, which is half, or less, of what most Megaways engine games offer.

How does the dynamic grid K-Cash feature work?

K-Cash symbol prizes accumulate above the reels, and collecting a K-Cash symbol will sometimes remove a blocker tile. Remove both blockers on a reel to win the prize above.

Is there a free spins mode in Rumble Ratz Megaways?

Yes, you start with 3 free spins, and K-Cash symbol prizes accumulate as before. However, now maxing out reels by removing blockers reset the spin tally, and you can also build a total K-Cash win multiplier up to x10.

Can I play Rumble Ratz Megaways Slot for free?

Yes, you can check the free Rumble Ratz Megaways demo game at the very top of this page (UK players must verify age first). Up there, you’ll also find casinos our scan has confirmed to carry this title.

Rumble Ratz Megaways
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Scanned Countries

US New Jersey

Sorry, Rumble Ratz Megaways is not available for this market. In total, we scanned casinos at 56 in various markets. Rumble Ratz Megaways is available in 40 countries. The markets with the highest number of casinos are: FI, CA, NO, NZ

Country Scanned [i] With Game [i] In Lobby [i] SlotRank [i] Action
Finland FI 509 134 1 1623 See Data
Canada CA 591 131 1 1660 See Data
Norway NO 406 120 0 6214 See Data
New Zealand NZ 414 106 0 6892 See Data

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Rumble Ratz Megaways Attributes

Provider: Kalamba Games
Release Date: 2022-08-12 [ i ]
Wide release date: 2022-08-17
Type: Video Slots
RTP: 96.21% RTP Ranges!
Variance: High
Hit Frequency: N/A
Max Win: x5000.00
Min bet $, €, £: 0.25
Max bet $, €, £: 37.5
Layout: 6-6
Betways: 46656
Features: Additive symbol, Buy Feature, FreeSpins, FreeSpins Multiplier, Megaways, Multiplier, Multiway (+1024), RTP range, Scatter symbols, Symbols collection (Energy), Wild
Theme: Brown, Cats, Dark blue, Rats
Other tags: 6 Reels, 96% RTP, Colossal Reels, Grid
Technology: JS, HTML5
Game Size: 23 MB
Last Update: 2023-03-26
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