Big Time Gaming casino games

Big Time Gaming casino games: the studio behind Megaways

Big Time Gaming (often shortened to BTG) was founded in Sydney, Australia, in 2011, and Nik Robinson leads it as chief executive. Its catalogue is small next to the largest suppliers, but its influence is huge: the Megaways mechanic it created now appears in hundreds of slots from other studios, all under licence.

Beyond Megaways, BTG has developed Megaclusters, where symbols split into smaller ones, and Megapays, which adds progressive jackpots to the format. If you are new to how studios supply casinos, our software providers explainer covers the basics, and the providers hub lists the other studios we profile.

From Sydney start-up to part of Evolution

In April 2021 Evolution, the Swedish live casino company, announced a deal to buy Big Time Gaming. BTG now sits alongside NetEnt, Red Tiger and Nolimit City in Evolution’s group of slot brands. Our Evolution profile covers the parent company, including a 2026 regulatory settlement.

How Big Time Gaming games reach UK players

Every game offered to British players must come from a supplier licensed by the Gambling Commission. When we read the register’s alphabetical business listing on 20 October 2026, no business under the Big Time Gaming name appeared. Evolution’s British licensee is Evolution Malta Holding Limited, account 41655, which holds remote gambling software and casino game host licences. We could not confirm from the register alone which group company supplies BTG titles to British casinos, so check the game’s help screen, which names the supplier, and search that name on the Commission’s register of businesses (opens in a new tab).

The practical safeguard for you is the casino’s licence: a UK-licensed casino may only offer games from licensed suppliers. Our guide to checking a casino licence shows how to confirm that in two minutes. More about the group is on Evolution’s own website (opens in a new tab).

How Megaways works: the maths of changing reels

On a standard Megaways game there are six reels, and each spin shows between two and seven symbols on each reel. Wins pay for matching symbols on adjacent reels from the left, in any position, so the number of ways to win is simply the number of symbols on each reel multiplied together. That is why the ways figure changes every spin. The idea builds on ways to win slots, which use a fixed grid.

More ways does not mean a better return. The RTP is fixed by the game’s design; a spin with 117,649 ways usually pays small amounts on many ways, while the large results come from features and multipliers. Most BTG Megaways games also use cascading reels, so winning symbols are removed and replaced, giving further chances within the same paid spin.

Big Time Gaming’s best-known slots

White Rabbit’s 97.24% is one of the higher published RTPs among well-known slots; its free spins add rows to the reels, pushing the ways count far above the usual cap. Danger High Voltage is a reminder that BTG also makes fixed-grid games: it uses 4,096 ways on a 6×4 layout rather than Megaways.

Bonanza and the unlimited free spins multiplier

Bonanza is the game that made Megaways famous, and it set the template. A horizontal reel above the middle reels adds extra symbols, and cascades remove winning symbols after each win. In free spins, a win multiplier starts at 1x and rises by one with every cascade, with no upper limit on the multiplier itself (the game’s overall max win still applies).

A worked example

Say you are in free spins on a £1 stake and a spin produces four cascading wins worth 20p, 50p, 30p and £1 before multipliers. With the multiplier stepping from 1x to 4x, they pay 20p, £1, 90p and £4: £6.10 in total rather than £2. The next spin begins at the multiplier reached so far. This is why free spins rounds vary so widely: a long cascade chain early on lifts every later win. See our guide to slot multipliers for more.

Megaclusters and Megapays: BTG’s other inventions

Megaclusters starts with a grid of symbols that pay in clusters. When a symbol is part of a win it splits into four smaller symbols, increasing the grid and the potential for further clusters. Star Clusters Megaclusters (2020) publishes 96.54% with medium-high volatility. The cluster pays guide explains the basic rule that symbols must touch.

Megapays combines the Megaways format with progressive jackpots. As with any jackpot game, part of each stake funds the prize pools, so read the help screen to see how the RTP is split. Our progressive jackpots guide explains why that matters.

Megaways under licence: other studios using BTG’s mechanic

Much of the Megaways you see in a UK lobby isn’t made by BTG at all. Other studios pay to use the mechanic and build their own games around it, which is why ‘Megaways’ appears in titles from very different suppliers. Our Megaways slots page covers the genre as a whole.

Our Blueprint Gaming profile covers one of the busiest licensees.

UK rules on Big Time Gaming casino games

• Slot spins must last at least 2.5 seconds, with no turbo or slam-stop, and there is no autoplay, under the Commission’s 2021 game design changes (opens in a new tab).
• A cascade sequence is part of one spin, so it doesn’t count as extra stakes.
• Wins equal to or less than the stake can’t be presented as wins with celebratory effects.
• The maximum stake is £5 per spin for players aged 25 and over and £2 for 18 to 24-year-olds, per the stake limit guidance (opens in a new tab).
• Feature buys aren’t offered in versions supplied to Great Britain, so free spins come only from normal play.

Our pages on the £5 stake limit and no bonus buy give more detail.

How to find Big Time Gaming casino games in a UK casino

1. Open the slots lobby and choose the provider filter.
2. Select Big Time Gaming; some sites group it under Evolution, so try both.
3. Don’t rely on a ‘Megaways’ category alone, as it mixes BTG games with licensed versions from other studios.
4. Open the help screen to confirm the developer, RTP and max win.
5. Choose a stake within your age-band limit and set a session budget first.

Where to play Megaways slots with a current welcome offer

We feature only our five UKGC-licensed partners, last checked on 5 October 2026. Their spins apply to selected games named in the terms, which may or may not include BTG titles.

PlayOJO (18+): new UK customers outside Northern Ireland who make a first deposit of at least £10 get 80 free spins on Big Bass Bonanza at 10p each. There is no wagering, so winnings are cash, and the offer works only through the designated link.

Coral (18+): between 1 October 2026 and 1 February 2027, new players who deposit and bet £10 on slots get 100 free spins at 10p on selected games, with 48 hours to accept and 7 days to use them, and no wagering on winnings. Neteller, PayPal, Paysafe, Skrill, prepaid cards and certain debit cards are excluded.

Ladbrokes (18+): new customers who play £10 on slots get 50 free spins daily for 10 days (up to 500) at 10p on selected games, claimed by 23:59 each day and valid for 7 days, no wagering. Prepaid cards, PayPal, Paysafe, Neteller, Skrill and Moneybookers don’t qualify. Coral and Ladbrokes share an operator, so check the terms on holding both. Losses are likely over time; the National Gambling Helpline (0808 8020 133) is free and confidential.

18+. Gambling should be entertainment that costs money, not a way to make it. Set a deposit limit before you play: how to set deposit limits. Free, confidential help: National Gambling Helpline 0808 8020 133.