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Lightning Box Games
4
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Rumble Roo K.O. Slot Review
Spin the Rumble Roo K.O. online slot by Lightning Box Games and head to the Australian outback to deliver knockout winning combinations on up to 40 paylines. Activate Respins Roo and Respins KO features to collect your kangaroo credit prizes. Trigger Mystery Spins to reveal up to ten mystery symbols.
Spin this boxing-themed slot for free, or play Rumble Roo K.O. for real money and enjoy an RTP of 96.02%.
Game Info
Return to Player
96.02
Provider
Lightning Box Games
Autoplay
Bonus Buy
Bonus Rounds
Cascading Reels/Avalanche Feature
Cluster Pays
Expanding
Free Spins
Gamble
Jackpot Slots
Megaways
Mobile
Multiplier Symbols
Mystery
Scatter Symbols
Spreading
Stacked
Sticky
Number of Paylines
40
Layout
5-4
Min Bet
0.4
Max Bet
50
Release Date
8/12/2025
Last Update
1/14/2026
About Lightning Box Games Game Provider
Lightning Box Games is a global leader in the gaming industry, specializing in the design, development, and distribution of gaming machines, lottery systems, and digital gaming solutions. With a diverse portfolio of innovative products, IGT offers casino games, slot machines, sports betting, and iGaming platforms. The company is known for integrating cutting-edge technology with a commitment to player experience, providing solutions for both land-based and online gaming operators.
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Make a Lightning Strike
Striking graphics and a touch of magic are two reasons players love spinning slots from Lightning Box Games. The Rumble Roo K.O. slot machine also has a boxing theme and fun features, making it one of the company’s best online slots. Fill the 5x4 reel matrix with high-paying championship belt wilds, koalas, and cockatoos. Use the bells to activate respins.
Deliver Winning Combinations
Activate the 40 paylines of the Rumble Roo K.O. online slot on every spin with bets of 0.40 to 40 coins. Win prizes with three or more matching symbols. Deliver more winning combinations with the help of championship belt wilds. Hit five-of-a-kind wilds to win up to 250 credits. Play at the best online slot sites and enjoy an RTP of 96.02%.
Respin to Enjoy Knockout Wins
Play Rumble Roo K.O. slot online at the best real money casinos to activate the features that make this game a knockout.
Respins Roo Feature – Trigger with six to 15 boxing ring bell scatters. Respin the reels to collect more bells. At the end of the feature, all bells turn into kangaroos and pay a prize of ten to 400 credits.
Respins KO Feature – Land a KO symbol during your respins, and it will multiply all kangaroo prizes 2x-10x.
Mystery Spins Feature – When Roo breaks the boxing bag, six to ten mystery symbols will be added to the reels. All mystery symbols turn into matching symbols for chances to deliver knockout wins.
Symbols
Top Credits at the Minimum Bet
Kangaroos
400
Wild Championship Belts
250
Koalas
120
Cockatoos / Platypuses
90
Boxing Gloves / Equipment Bag
80
A / K
50
Q / J / 10
30
Deliver More Knockout Blows
If it’s time to manoeuvre off the ropes of the Rumble Roo K.O. slot machine, spin other boxing-themed slots like Boxing Roo by KA Gaming. Check out the latest features from Spinomenal while playing Play Boxing Ring Champions.
Get Ready to Rumble
Our Rumble Roo K.O. review highlights why it’s time to make this hot slot your next opponent. Deliver knockout blows with Respins Roo, Respins KO, and Mystery Spins features, and become a champion.
Play Rumble Roo K.O. for free or real money. Spin other exciting slots from Lightning Box Games below.
Rumble Roo K.O. Slot FAQs
Rumble Roo K.O. Slot FAQs
Play Rumble Roo K.O. for free here at VegasSlotsOnline and discover how to deliver knockout blows with respin features and mystery symbols. Explore 30,000+ free slots, including more boxing-themed games.
Where can I play Rumble Roo K.O. for real money?
Play Rumble Roo K.O. and other real money slots by Lightning Box Games at recommended online casinos and slot sites. Sign up and claim welcome bonuses to play Rumble Roo K.O.
Can I play Rumble Roo K.O. on my mobile phone?
Sure! Enjoy the striking graphics of Lightning Box Games when you spin Rumble Roo K.O. on your iPhone or smartphone. Trigger top features at home or on the go.
What are respin features?
Respins Roo and Respins KO are two of the best features of the Rumble Roo K.O. slot game. Trigger with boxing bell scatters and collect as many kangaroos as possible to win big prizes.
What deposit methods can I use to play Rumble Roo K.O.?
Deposit funds to play Rumble Roo K.O. with online payment solutions like debit cards, credit cards, and e-wallets. Deposit funds at the top online casinos and claim your welcome offers.