Updated November 2026
Big Time Gaming Slots: Bonanza, Extra Chilli and Megaways
Big Time Gaming invented Megaways, the reel system behind hundreds of slots from many studios. Below you find the casinos from our reviews where we confirmed Big Time Gaming, every BTG slot we have reviewed with RTP and max win, and how Megaways games play.
- Casinos with Big Time Gaming
- 8 of 39 reviewed
- Slot reviews
- 5
- Highest RTP we list
- 96.42% White Rabbit
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Casinos with Big Time Gaming games
8 of the 39 casinos we review have Big Time Gaming slots in the lobby, based on the game provider list we checked for each review. They are sorted by our overall ranking. In the other 31 reviews we did not confirm Big Time Gaming, so those casinos are not listed here. They may still add the studio later, and the full provider list is in each review.
Welcome bonus
Up to 400 Free Spins + Match Bonus on First 4 Deposits
Welcome bonus
200% Deposit Bonus up to $2,000
Welcome bonus
Up to €1,500 + 150 Free Spins on 4 deposits
Welcome bonus
Up to €1,000 over 4 deposits (codes)
Welcome bonus
Up to €3,000 + 600 free spins over 4 deposits
Welcome bonus
Up to €1,000 + 200 free spins over 3 deposits
Welcome bonus
Up to €5,000 + 200 free spins over 4 deposits
Welcome bonus
100% first deposit bonus with free spins: up to €1,000 + 300 FS or up to €6,000 + 100 FS, depending on country
Game libraries change and some studios are blocked in certain countries. Check that a game opens in your region before you deposit. T&Cs apply, 18+, play responsibly.
Best Big Time Gaming slots by RTP
These are the Big Time Gaming games we have reviewed in full, sorted by the highest RTP the studio publishes for each one. Casinos can run a lower RTP version of the same game, so open the game info screen to see which one you get.
White Rabbit
Big Time Gaming · 2017
- RTP
- 96.42%
- Volatility
- Medium-High
- Max win
- 17,416x
Best for: Megaways players who enjoy slow building bonus rounds with growing reels
Read the White Rabbit review →
Extra Chilli
Big Time Gaming · 2018
- RTP
- 96.41%
- Volatility
- High
- Max win
- 20,000x
Best for: Megaways fans who want a high variance bonus with an unlimited multiplier
Read the Extra Chilli review →
Who Wants to Be a Millionaire Megaways
Big Time Gaming · 2018
- RTP
- 96.3%
- Volatility
- Medium-High
- Max win
- 72,310x
Best for: Megaways fans who want an unlimited multiplier bonus and like having a gamble choice before free spins.
Read the Who Wants to Be a Millionaire Megaways review →
Bonanza Megaways
Big Time Gaming · 2016
- RTP
- 96.0%
- Volatility
- Medium-High
- Max win
- 12,000x to 26,000x
Best for: High-volatility players who want the original Megaways experience with a proven free spins escalation model
Read the Bonanza Megaways review →
Danger High Voltage
Big Time Gaming · 2017
- RTP
- 95.67%
- Volatility
- Medium-High
- Max win
- 15,746x
Best for: Players who like a loud music theme and want to choose between a steady and a risky free spins round.
Read the Danger High Voltage review →
About Big Time Gaming
Big Time Gaming was founded in 2011 in Sydney, Australia. Its Megaways engine changes the number of symbols on each reel every spin, so the number of ways to win changes too, up to 117,649. Dragon Born was the first Megaways slot, and Bonanza Megaways in 2016 made the system famous. BTG now licenses Megaways to other studios, which is why you see it on games from many providers. In 2021 Evolution bought Big Time Gaming, so it now sits in the same group as NetEnt and Nolimit City.
We review five BTG slots. Bonanza Megaways lists an RTP of 96% and a max win that sources give as 12,000x to 26,000x. Extra Chilli lists 96.41% and a max win of 20,000x, and White Rabbit lists 96.42% and a max win of 17,416x. Who Wants to Be a Millionaire Megaways lists 96.3% and 72,310x, and Danger High Voltage 95.67% and 15,746x.
How Megaways slots play
Megaways games use cascades: winning symbols disappear and new ones drop in, so one spin can pay several times. In the free spins most BTG games add an unlimited win multiplier that grows with each cascade, which is where the big wins come from. Our guide to RTP and volatility explains why these games have long quiet runs.
Many BTG slots also have a feature drop or bonus buy, but the price and RTP can change between versions and markets. Each slot review lists what the sources show.
How to choose a casino for Big Time Gaming games
Start with the list above, then read the bonus terms for max bet rules and whether bonus buys are allowed while you clear wagering. Our casino reviews list withdrawal limits too, which matter if a Megaways bonus pays big.
Run any bonus through the wagering calculator before you play. Current codes are on the bonus codes page, and the Mostbet review covers one of the larger slot lobbies in our ranking.
Similar studios
Pragmatic Play makes many Megaways games of its own, such as The Dog House Megaways and Buffalo King Megaways. For NetEnt games in the same group, see NetEnt slots.