Big Time Gaming casino sites (UK) logo

Big Time Gaming

Established in 2011

Total Games

100+

New Games Per Month

1+

Main Focus

Slots

Employees

14+

Location

Australia

Big Time Gaming casino sites (UK)

Chris Vaughan
Author:
Fact Checker:
Last Updated:

Big Time Gaming casino games come with features like the groundbreaking Megaways mechanic and some of the most volatile, high-payout slots in the iGaming world. Licensed by the UK Gambling Commission, BTG supplies nearly every major UK online casino with innovative, fair-play games that can deliver five-figure wins in a single spin.

Big Time Gaming logo

Best Big Time Gaming Casino sites

Casino Special Information More Information Visit This Casino
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Big Time Gaming at a glance

Big Time Gaming casino benchmarks timeline highlights

Year Milestone
2016 Megaways debuts in Dragon Born, then explodes in popularity with Bonanza.
2017 White Rabbit introduces Feature Drop (bonus buy outside the UK) and a record RTP of ≈ 97.7%.
2018 Extra Chilli perfects “gamble for spins” and cements BTG as a high-volatility icon.
2020 MegaClusters mechanic launches in Star Clusters.
2021 Evolution acquires BTG; Megapays progressive-jackpot network rolls out.

Core Big Time Gaming casino mechanics

Megaways

Dynamic reels create 2–7 symbols per reel on every spin, producing up to 117,649 ways and cascading “reaction” wins for chain payouts.

Lobby showing BGT megaways slot games

MegaClusters

Winning symbols split into four mini symbols, expanding the grid and enabling successive cluster wins.

MegaQuads

Four sets of reels run simultaneously; special features can merge them for colossal wins.

Megapays

Four-tier progressive jackpots shared across a network of branded BTG titles.

iPhone device displaying Who Wants to be a Millionaire Megapays game from BGT

Win Exchange

UK-compliant alternative to bonus buys: trade big base-game wins for a shot at free spins instead of purchasing them outright.

Big Time Gaming casino Megaways slots

What Is Megaways?

Megaways is Big Time Gaming’s patented reel-modifier that randomises the number of symbols on each reel every spin. With six reels (sometimes seven) that can display 2 – 7 symbols each, the grid produces up to 117,649 ways to win. When reels expand beyond seven rows (e.g. White Rabbit up to 12 high) the ways can exceed one million.

Megaways timeline

Year Release / Event Milestone
2015 Dragon Born First ever Megaways slot (117 649 ways)
2016 Bonanza Megaways Mechanic goes mainstream; UK streamers fuel viral growth
2018 Open-Licence Model BTG licences IP to Blueprint → Megaways boom
2019 Monopoly Megaways First branded Megaways + board-progress bonus
2021 200+ Megaways titles live Every major supplier now offers Megaways variants
2023 Megaways patent extended to 2037* Keeps BTG licencing revenue flowing for the next decade

*Based on new-mechanic continuations filed with the UK IPO.

How many ways? Quick maths

Ways per spin = product of symbol counts per reel. Example Bonanza spin: 4-6-7-6-6 symbols → 4 × 6 × 7 × 4 × 6 × 6 = 24 192 win ways for that single spin.

Top BTG-developed Megaways slots

Slot Year Max Ways RTP (%) Volatility Max Win ×
Bonanza Megaways 2016 117 649 96.00 High 12,000
Extra Chilli Megaways 2018 117 649 96.82 High 20,000
Who Wants to Be a Millionaire MW 2018 117 649 96.24 Very High 72,310
White Rabbit Megaways 2019 Up to 588×12) 97.24 High 13,000
Lil Devil 2019 NA 96.43 High 40,960
Monopoly Megaways 2019 117 649 96.50 High 14,700
Wild Flower 2022 117 649 96.52 High 114,000
King of Cats 2023 117 649 96.72 High 56,620
Pirate Pays Megaways 2024 117 649 96.23 High 20,500
Castle of Terror 2025 117 649 96.65 Very High 100,000

Why Megaways slots resonate with UK Players

Beyond BTG: Licensed Megaways highlights

BTG rents the engine to 50+ studios. UK fan favourites include:

All licensed titles pay royalties back to BTG and must pass UKGC game-math certification identical to BTG originals.

Future of Megaways games

BTG continues to evolve the IP with hybrid engines:

Top Big Time Gaming casino slots

Slot Mechanic RTP Max Win Why Play It
Bonanza Megaways ≈ 96 % ≈ 26,000× Original Megaways classic; unlimited win multiplier in free spins.
Extra Chilli Megaways ≈ 96.8 % ≈ 20,000× Spicy sequel with gamble-for-spins feature.
White Rabbit Megaways ≈ 97.7 % ≈ 13,000× Expanding reels to 248,832 ways; top-tier RTP.
Danger High Voltage 4096 Ways ≈ 95.7 % ≈ 20,000× Two bonus modes, x11 roaming wilds & sticky wilds.
Lil’ Devil 4096 Ways ≈ 96.4 % 50,000×+ “Heartstopper” enhanced spins after 40 hearts collected.

How BTG compares to other top slot providers

Provider Main Strengths Signature Games Volatility Focus
Big Time Gaming Mechanics innovation; high RTP; huge potential Bonanza, Extra Chilli, White Rabbit High / Extreme
NetEnt Polished graphics; mainstream appeal Starburst, Gonzo’s Quest Low–Medium
Play’n GO Frequent releases; franchise series Book of Dead, Reactoonz Low–High mix
Pragmatic Play High volume; varied features Gates of Olympus, The Dog House Megaways Medium–High
Nolimit City Edgy themes; ultra-high max wins San Quentin, Tombstone RIP Very High / Insane

Playing BTG slots in the UK

Big Time Gaming casino slot catalogue

All RTP values show the highest-available UK file. Most titles also ship with 94% and 92% packs – always check the “i” panel in-game as RTP variations may occur from casino to casino.

Slot Year Top RTP (%) Volatility Max Win × Signature Mechanic
Bonanza Megaways 2016 96.00 High 12 000 Original Megaways
Extra Chilli Megaways 2018 96.82 High 20 000 Feature Drop
White Rabbit Megaways 2019 97.24 (97.72 buy) High 13 000 Extending Reels
Danger High Voltage 2017 95.97 High 15 746 Six-Reel 2 × 6 Wilds
Who Wants to Be a Millionaire MW 2018 96.24 Very High 72 310 Free-Spin Gamble Ladder
Monopoly Megaways 2019 96.50 High 14 700 Board-Progress Spin Trail
Lil Devil 2019 96.43 High 40 960 Heartstopper Mode
Donuts 2018 96.54 Medium-High 40 000 4×4 Symbol Blocks
Holy Diver Megaways 2019 96.54 Medium-High 20 121 Level-Up Reel Set
Star Clusters MegaClusters 2021 96.34 High 23 000 MegaClusters
Cyberslot MegaClusters 2021 96.36 High 23 960 Re-Spins + Roaming Wild
Chocolates 2020 96.60 High 65 536 Scatter Boxes
King of Cats 2023 96.72 High 56 620 Dual Mode (Lion/Puma)
Pirate Pays Megaways 2024 96.23 High 20 500 Bootstrap Wheel
Gold Megaways 2023 96.42 High 20 200 Win-Exchange
Wild Flower 2022 96.52 High 114 000 Enhanced Free Spins
Castle of Terror 2025 96.65 Very High 100 000 Holy Water Wilds
The Race Megaways 2024 96.43 High 66 670 Cluster Wild Respins
Over the Moon 2024 96.55 High 13 570 Rocket Multipliers
Big Bad Bison 2024 96.07 Medium-High 25 810 Roaming Wild Stack

UK Regulation & Fair-Play Overview

UKGC Compliance

Independent Testing

All RNG seeds and Megaways shufflers are certified by eCOGRA & Gaming Labs International. Latest certificate renewal: .

Safer-Gambling Tooling

Big Time Gaming Milestone Timeline

Year Key Event Impact for UK Players
2011 Studio founded in Sydney by Nick Robinson & Huw McIntosh BTG licence applications begin with the UKGC
2016 Bonanza Megaways launches Megaways mechanic debuts, 117 649 ways → industry-wide hit
2017 Book of Gods introduces Feature Drop buy-bonus First regulated bonus-buy in the UK market
2018 Extra Chilli Megaways & Who Wants to Be a Millionaire Megaways Megaways IP licensed to other suppliers (Blueprint, Pragmatic)
2019 White Rabbit sets record 97.72 % RTP with bonus buy High-RTP debate triggers UKGC notice on configurable files
2020 Evolution AB acquires Big Time Gaming for €450 m BTG content integrated into all Evolution-partnered UK casinos
2021 MegaClusters mechanic launches in Star Clusters Cluster-pay slots approved under UK remote technical standards
2023 King of Cats ships with Player-Selectable RTP packs First dual-game mode (Lion vs. Puma) in a single Megaways grid
2024 Pirate Pays Megaways & Big Bad Bison Introduction of “Bootstrap” bonus-wheel for UK safer-gambling
2025 Castle of Terror reaches 100 000× certified max-win BTG’s biggest potential payout approved by UK test labs

Key takeaways

Whether you’re chasing a Megaways mega-hit or exploring new mechanics like MegaClusters, Big Time Gaming delivers some of the most exciting, high-potential slots available to UK players today.

Big Time Gaming Casino sites FAQs

Every spin randomises the number of symbols per reel, producing anything from a few hundred to over one hundred thousand ways to win. Cascading wins and unlimited multipliers in free spins add explosive potential.

In theory, Lil’ Devil can exceed 50,000× stake. For progressive jackpots, look for the Megapays series such as Bonanza Megapays

No. Bonus-buy (Feature Drop) is disabled under UK regulations. Instead, games may offer Win Exchange to enter free spins by exchanging a large win.

Yes. BTG holds a UKGC licence; all games are independently tested, use secure RNGs, and integrate safer-gambling features.

Most UK casinos provide demo mode for registered, age-verified players. BTG also hosts free-play versions on its official site.

Chris Vaughan
Chris Vaughan Senior Writer & Editor
57 Articles 0 Reviews

Chris Vaughan is a Senior Writer and Editor at GamblingAuthority. He has more than 18 years of experience in the iGaming industry and has great knowledge of game developers, trending games and casino research.

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Last Updated: 15 July 2025