Big Time Gaming is a Sydney-founded slot studio, best known for inventing the Megaways mechanic and releasing landmark titles such as Bonanza Megaways, Extra Chilli Megaways, and Danger High Voltage. Their UK catalogue includes 6 titles featured on ALHCO, spanning RTP figures from 95.67% to 96.53%. The portfolio leans heavily on high-volatility Megaways formats, which suits players comfortable with variance but may feel narrow to those seeking low-stakes variety.
About Big Time Gaming
Company history
Big Time Gaming was established in 2011 in Australia, making it one of the earlier independent studios to emerge outside the traditional European development centres. The company built its reputation gradually before releasing the title that would change the industry: Bonanza in late 2016, which debuted the Megaways engine. Scientific Games (now Light & Wonder) acquired a licence to the Megaways mechanic, allowing it to propagate across dozens of third-party studios. BTG itself remains a creator of original content and continues to hold the intellectual foundation of the mechanic. The studio operates under a UKGC licence, though the specific licence number has not been published publicly, meaning players should verify current authorisation via the Slot Volatility Explained register or the UKGC portal directly.
What makes them different
Big Time Gaming's defining contribution is the variable-reel Megaways system, which alters the number of symbols displayed on each reel with every spin, generating up to 117,649 ways to win in its standard six-reel configuration. Rivals such as Pragmatic Play adopted and extended the format under licence, while NetEnt pursued a different trajectory with fixed-grid cluster pays. What separates BTG's originals from licensed Megaways derivatives is the tighter integration between the reel mechanic and bonus design - cascading wins feeding into multiplier ladders feel cohesive rather than bolted on. The honest tradeoff: BTG's own catalogue is small (6 titles on ALHCO), and the Mining aesthetic that dominates several flagship titles can make the portfolio feel repetitive to players who have spent time with Bonanza and its spiritual sequels.
Key Facts Table
| Fact | Value |
|---|---|
| Founded | N/A |
| Headquarters | N/A |
| UKGC Licence | UKGC licensed (specific licence number not published) |
| Slots on ALHCO | 6 |
| RTP Range | 95.67% - 96.53% |
| Most Common Theme | mining |
| Most Common Slot Type | megaways |
Signature Mechanics & House Style
Across the 6 BTG titles catalogued on ALHCO, several recurring mechanical patterns emerge that define the studio's design philosophy. The common thread is a preference for compounding reward structures - features that build on each other rather than triggering in isolation. In our testing, cascading wins, expanding reels, and multiplier accumulation appear consistently across the lineup.
- Megaways variable reels: each spin independently randomises the symbol count per reel, producing between 324 and 117,649 active ways to win depending on reel height configuration. - Cascading wins (also known as tumbling reels): winning symbols are removed and replaced from above, allowing a single paid spin to generate multiple consecutive win evaluations without an additional stake. - Free spins with a multiplier ladder: the free-spin bonus typically increments a win multiplier with each cascade, with no publicly disclosed cap in several titles. - Scatter-triggered bonus rounds: the public paytable discloses scatter symbol involvement in bonus activation, though specific scatter counts vary by title - players should consult individual game rules. - Reactionary reel expansion: in titles such as Extra Chilli Megaways, bonus mechanics alter reel geometry mid-feature, increasing the ways-to-win count beyond the base-game ceiling.
Top Big Time Gaming Slots on ALHCO
Bonanza Megaways
Released in December 2016, Bonanza Megaways is the title that introduced the Megaways engine to the wider market and remains BTG's most recognised product. Its mining-cart visual framing sits over a six-reel grid with an additional horizontal reel across the top, a configuration that sets it apart from later Megaways derivatives. RTP is documented at 96%, volatility is rated high, and the max win reaches up to 26,000x the stake - the highest ceiling in BTG's ALHCO catalogue. Read our full Bonanza Megaways review for mechanic-by-mechanic analysis.
Extra Chilli Megaways
Extra Chilli Megaways, released in April 2018, operates as a structural follow-up to Bonanza - retaining cascading wins and the Megaways reel system while introducing a respin-based bonus-buy adjacent mechanic and a chilli-themed visual palette that departs from the mining aesthetic. RTP sits at 96.19%, and the max win ceiling is documented at up to 20,000x the stake. Volatility data is not publicly confirmed in the standard sense, which we note as an unusual disclosure gap for a title of this prominence. See our Extra Chilli Megaways review for detailed feature breakdown.
Danger High Voltage
Danger High Voltage, released in May 2017, is the most stylistically distinct title in BTG's ALHCO catalogue, drawing on a high-energy electric aesthetic influenced by the B-52s track of the same name. It operates as a high-volatility Danger High Voltage with an RTP of 95.67% - the lowest in the current BTG ALHCO portfolio - and a max win of up to 15,746x the stake. Two bonus modes (High Voltage Free Spins and Gate of Hell Free Spins) offer different risk profiles within the same game, which gives players a degree of mechanic choice uncommon in BTG's lineup.
RTP & Volatility Range Across the Portfolio
Across the 6 BTG titles on ALHCO, the RTP range runs from 95.67% (Danger High Voltage) to 96.53%, with the majority of titles clustered near the UK industry average of 96%. That average is broadly in line with the wider market, though players should note that several titles publish variable RTP figures - meaning the active RTP can be adjusted by the operator within a disclosed range. For a full explanation of how volatility and RTP interact, see our Slot Volatility Explained. The volatility mix skews heavily toward high variance: 4 of the 6 catalogued titles are rated high volatility, with 1 rated medium to high. This means bankroll depletion between bonus triggers is a genuine consideration, not a remote scenario. Players seeking lower-variance alternatives should look outside the BTG portfolio.
Where to Play Big Time Gaming Slots in the UK
BTG titles are carried by a range of UKGC-licensed operators. On ALHCO, we highlight Spin Genie and 21 Casino as two operators where the BTG catalogue is accessible to verified UK players. Both operate under UKGC authorisation, which means UK-specific protections apply: stake caps of £5 for most players and £2 for those identified as at risk or under 25 (effective under 2026 regulations), mandatory 5-second spin intervals, and a 10x wagering cap on bonus offers. Credit cards are prohibited for gambling deposits across all UKGC-licensed platforms. For independent support and responsible gambling resources, visit BeGambleAware. To verify any operator's current licence status, consult the UK Gambling Commission register directly. All BTG titles should be played within personal deposit and time limits.
