Big Time Gaming invented two mechanics that are now industry standards: Megaways and Bonus Buy.
Founded in 2011 in Australia by Nik Robinson, BTG launched its first slot in 2013. In 2016 it released Dragon Born, the first slot with a Megaways engine. Two years later came Bonanza Megaways — the slot that popularized the mechanic and changed the direction of the entire iGaming sector. In 2021 Evolution Group acquired BTG for 450 million euros.
Today BTG operates as a studio within the Evolution group. Its catalog is relatively small (40+ slots), but its footprint in the market is disproportionate: 150+ providers license BTG's Megaways technology under agreement. When you play a slot with "Megaways" in the name, you are playing content with royalties flowing to BTG.
Across our panel of 24 casinos, 4 offer BTG content — and practically all 24 offer Megaways slots from other studios under BTG license.
| Data | Value |
|---|---|
| Founded | 2011, Sydney (Australia) |
| Founder | Nik Robinson |
| Current owner | Evolution Group (Nasdaq EVO) |
| Evolution acquisition | 2021, €450M |
| Flagship slot | Bonanza Megaways (2016) |
| Key innovations | Megaways (2015), Bonus Buy (2017) |
| Maximum lines | 117,649 (Megaways) |
| Licenses | UKGC, MGA |
| Casinos in our panel | 4/24 (17%) |
Megaways: 117,649 Lines and the Mechanic That Changed the Sector
Before Megaways, slots had a fixed number of lines: 10, 20, 25. Megaways changed that with a dynamic system:
- Each reel changes height on every spin (2 to 7 symbols per reel)
- Lines are recalculated according to the combination
- Theoretical maximum: 117,649 lines (7^6, assuming 7 symbols across 6 reels)
The mechanic was patented by BTG. To use it, other studios pay a license fee. The market operates under this arrangement:
- Pragmatic Play, Red Tiger, Blueprint Gaming, ReelPlay, iSoftBet — all publish licensed Megaways slots
- BTG charges a royalty on every game using the trademark
The result: when you play Gates of Olympus Megaways or Mystery Reels Megaways, BTG receives a percentage even though another studio produced the slot.
Bonus Buy: the Other Innovation
In 2017, White Rabbit Megaways became the first online slot to offer Bonus Buy — the option to pay directly (typically 75x-100x the bet) to trigger the bonus round without waiting for it to appear organically.
The mechanic solved a documented problem: high-roller players frustrated by long sessions with no bonus. Bonus Buy offers direct access to the feature at a fixed price.
Today Bonus Buy is standard in the sector. Most high-volatility slots offer it — Pragmatic Play, Nolimit City, Hacksaw, Push Gaming. But the UK and Germany banned Bonus Buy in 2022 over responsible-gambling considerations. In LATAM and Spain the mechanic is still active.
Catalog: 40+ High-Volatility Slots
BTG produces relatively little content of its own. Its core catalog:
| Slot | RTP | Max Win | Year |
|---|---|---|---|
| Bonanza Megaways | 96.00% | 26,000x | 2016 |
| White Rabbit Megaways | 97.77% | 17,408x | 2017 |
| Extra Chilli Megaways | 96.82% | 20,000x | 2018 |
| Donuts | 96.55% | 20,000x | 2018 |
| Lil Devil | 96.42% | 38,812x | 2019 |
| Who Wants to Be a Millionaire Megaways | 96.24% | 50,000x | 2019 |
| The Final Countdown Megaways | 96.55% | 50,000x | 2019 |
BTG slots are consistent in profile: high volatility, aggressive max win, Megaways + Bonus Buy + Free Spins mechanics. White Rabbit Megaways stands out for an exceptional RTP (97.77%), one of the highest in the sector's Megaways slots.
Casinos With BTG in LATAM/ES
We checked availability in May 2026:
Spain (3 casinos):
- Codere Spain — Bonanza Megaways + classic selection
- 888casino Spain — White Rabbit, Extra Chilli
- LeoVegas Spain — broad BTG catalog
Argentina (1 casino):
- Bplay — Bonanza Megaways, Donuts
Mexico: limited availability via Evolution Group catalogs. Caliente and Strendus offer licensed Megaways slots (Gates of Olympus Megaways by Pragmatic, Mystery Reels Megaways by Red Tiger) but no BTG slots of their own.
Licenses and Auditing
BTG operates with UKGC and MGA licenses. External auditing by eCOGRA. After the acquisition by Evolution Group (Nasdaq EVO), BTG inherits the compliance infrastructure of the Swedish conglomerate.
How We Tested Big Time Gaming
Three sessions between March and May 2026.
We opened accounts at Codere Spain and Bplay Argentina. We played 100 spins of Bonanza Megaways at Codere with a €0.40 bet — we triggered the free spins once with a progressive multiplier, for a €18 win. We confirmed the cascade system (winning symbols explode and new ones drop in).
We tried White Rabbit Megaways at 888casino Spain with 50 spins. We verified the stated 97.77% RTP on the help screen. We did not use Bonus Buy (legally available in Spain, but we wanted to check organic volatility).
We contacted LeoVegas Spain support with the question "Which BTG slots in your catalog allow Bonus Buy?". The reply came in 3 minutes 50 seconds, confirming 6 titles with the feature enabled.
We cross-checked figures with Evolution Group filings (2021 acquisition, €450M), BigWinBoard (documented max wins), and UKGC and MGA registers.
We received no compensation from BTG or from the operators listed.
The Good and the Bad
The good
- Inventor of Megaways — the most influential mechanic in modern iGaming
- White Rabbit Megaways 97.77% RTP — one of the highest returns in the high-volatility segment
- Aggressive max wins — 50,000x in Millionaire Megaways and Final Countdown
- Evolution Group financial stability — the €450M acquisition reflects a solid valuation
The bad
- Consistently high volatility — BTG slots are not for players with a limited budget; sessions can run long with no bonus
- Small catalog — only 40+ slots of its own; much of BTG's presence at operators comes from licensed slots by other studios
- Bonus Buy banned in some markets — the UK and Germany blocked the mechanic in 2022 over responsible gambling
- Limited LATAM presence — only Bplay in Argentina; Mexico is practically without BTG slots of its own
Frequently Asked Questions
What is Big Time Gaming?
A slots studio founded in 2011 in Australia. Inventor of Megaways (2015) and Bonus Buy (2017). Acquired by Evolution Group in 2021 for €450M.
What is Megaways?
A mechanic patented by BTG where each reel changes height on every spin (2-7 symbols), generating up to 117,649 dynamic lines. BTG licenses the technology to 150+ providers that pay royalties.
What is Bonus Buy?
An option to pay directly (typically 75x-100x the bet) to trigger the bonus round without waiting. BTG introduced it in 2017. It has been banned in the UK and Germany since 2022.
What is the max win of Bonanza Megaways?
26,000x the bet. White Rabbit Megaways reaches 17,408x, Lil Devil 38,812x, and Millionaire Megaways/Final Countdown reach 50,000x.
Which LATAM/ES casinos let me play BTG?
Codere Spain, 888casino Spain, LeoVegas Spain, Bplay Argentina. In Mexico the direct presence is very limited.
Is BTG safe?
UKGC and MGA licenses. eCOGRA auditing. It belongs to Evolution Group, a Nasdaq Stockholm public company with regulated financial disclosure.
Review updated: May 2026. Figures cross-checked with Evolution Group filings (2021 acquisition), BigWinBoard, UKGC and MGA registers, and official BTG communications. Casino.Juegos is an independent editorial site.