Big Time Gaming (BTG) is the Australian studio that invented the Megaways mechanic — one of the most transformative innovations in online slots. This hub covers their history, signature features, our top 10 picks, the full game catalogue, and the best casinos to play them at.
Founded in 2011 by Nik Robinson in Sydney, Australia, Big Time Gaming spent its early years crafting a small but carefully designed portfolio of online slots. The studio's philosophy has always favoured quality and innovation over volume — a stark contrast to providers that release multiple titles per month.
The defining moment came in 2016 with the release of Bonanza, which introduced the Megaways mechanic to the world. By randomising the number of symbols on each reel every spin, Megaways created a dynamic where up to 117,649 ways to win could form on a single spin. The concept was so successful that BTG licensed it to dozens of other studios, fundamentally reshaping the slot landscape.
In 2021, Evolution Gaming acquired Big Time Gaming, integrating the studio into its growing portfolio of game providers. Under Evolution's umbrella, BTG has continued to innovate while maintaining its reputation for mathematically sophisticated, high-volatility games.
While BTG's catalogue is smaller than many competitors, their influence on the industry is outsized. Megaways has become a standard mechanic across the slot world, and titles like Bonanza, Extra Chilli, and White Rabbit remain staples at top online casinos years after release.
Big Time Gaming has developed several defining gameplay mechanics. Their patented Megaways system in particular has become one of the most widely adopted innovations in slot history.
BTG's patented mechanic that randomises the number of symbols on each reel every spin, creating up to 117,649 (or more) ways to win. Licensed to dozens of other studios, Megaways has become one of the most influential slot innovations of the modern era. Featured in Bonanza, Extra Chilli, White Rabbit, and many more.
When a winning combination lands, the winning symbols are removed from the grid and new symbols drop in from above. This cascade continues as long as new wins form, often paired with an increasing multiplier during free spins. This mechanic is integral to almost every BTG title.
A horizontal reel that sits above the main grid, adding additional symbols to the top row of certain reels. This increases the number of Megaways available and creates more winning combinations. Most prominently featured in Bonanza and Extra Chilli.
Allows players to purchase immediate access to the free spins bonus round for a set multiplier of the base stake. BTG pioneered this concept, which has since been adopted across the industry. Not available in all jurisdictions due to regulatory restrictions.
Our editorial team has selected the ten most notable Big Time Gaming slots based on gameplay quality, win potential, player popularity, and mechanical innovation. Ratings reflect our own testing and analysis.
The original Megaways slot that started a revolution. Set in a gold-mining theme, Bonanza offers up to 117,649 ways to win with cascading reactions and an unlimited win multiplier during free spins. It remains one of the most iconic slots ever released.
The sequel to Bonanza, Extra Chilli adds a horizontal extra reel and the gamble feature for free spins. Players can gamble their scatter wins to earn up to 24 free spins. The unlimited multiplier in the bonus round makes every cascade increasingly valuable.
One of BTG's most potent releases, Rasputin Megaways combines the Megaways engine with a mystic Russian theme. The hypnotic bonus round features an ever-increasing multiplier and mystery symbols that can align for colossal payouts.
A medieval-themed Megaways slot with gem collection mechanics. Collected gems power up different reel modifiers in the bonus round, giving players some strategic influence over their free spins experience. The theoretical max of 50,000x reflects its extreme volatility.
An Alice in Wonderland-inspired Megaways slot with one of the highest base RTPs in the industry. The extending reels feature can push the reel set up to 248,832 ways to win during free spins, and the caterpillar can add cupcake Wilds at any time.
A uniquely themed slot based on the Electric Six song, featuring two distinct bonus rounds: Gates of Hell with sticky Wilds and High Voltage with multiplier Wilds. The contrasting bonus modes give players varied experiences across sessions.
A deceptively simple-looking 4x4 grid slot where oversized 2x2 and 3x3 symbols combine with scatter pays for massive potential. The Golden Donut feature during free spins adds multipliers up to 100x, making it a cult favourite among experienced players.
A fruity Megaways slot with up to 4,096 ways to win. The Icy Wilds feature turns entire reels wild during free spins, and cascading wins with an increasing multiplier build significant payout chains. Clean design and smooth gameplay make it a BTG staple.
Themed around the British Royal Mint, this slot introduces the Royale Spins feature where every cascade adds to the win multiplier. The coin collect mechanic in the bonus round can generate substantial accumulations before the final tally.
A cluster-pay departure from the Megaways format, Star Clusters uses a 4x4 grid that expands up to 8x8 through cascading wins. Gold Wild multipliers can reach 10x and the mega cluster mechanic delivers BTG's signature high-ceiling payouts.
The latest Big Time Gaming releases arriving at casinos this month.
The definitive Bonanza sequel brings a new Gold Rush feature where consecutive Reactions fill a Gold Cart meter. Once full, the cart delivers a random multiplier between 10x and 100x applied to the next win. Up to 117,649 Megaways with the classic Extra Reel and unlimited free spin multiplier.
BTG’s first sci-fi themed Megaways slot introduces Quantum Collapse cascades where winning symbols split into smaller quantum particles before new symbols materialise. The Entanglement Free Spins link matching reel positions across parallel grid states, creating up to 234,256 ways to win.
A Celtic mythology-themed Megaways slot featuring the new Druid Stone modifier. Druid Stones randomly appear and transform surrounding symbols into matching high-value icons. The Feature Drop costs 75x stake for immediate free spins access.
1 Big Time Gaming slots reviewed on TopSlot.vip
The following casinos carry Big Time Gaming titles and have been reviewed by our team. Welcome bonus offers are subject to terms and conditions — always read the full T&Cs before claiming.
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