Last updated: 01-06-2026
Big Time Gaming is the Australian studio behind the Megaways mechanic — one of the most significant innovations in slot design. The Megaways patent, filed in 2015 and granted in 2016, randomises the number of symbols appearing on each reel every spin. On a standard 6-reel BTG setup this produces between 324 and 117,649 ways to win, with the exact number changing on every spin. Combined with cascading symbols and an unlimited multiplier during free spins, the mechanic produces the session distribution profile BTG is known for: long base-game dry spells, infrequent features, and the occasional very large win when a feature runs well. This page covers every BTG original title available, plus the Megaways licence and how it shapes the wider market.
Big Time Gaming — RTP and volatility across the catalogue
BTG publishes RTP figures for all titles. White Rabbit Megaways leads the original catalogue at 97.72% — above most competitors in the same volatility tier. Bonanza, Extra Chilli, Primal, Donuts, and Lil' Devil all sit at 96.00–96.19%. The volatility across the entire BTG original catalogue is uniformly high to very-high. There is no low-volatility BTG title. Players who want the Megaways mechanic with more moderate session variance should look at licensed Megaways titles from other providers, which often trade some peak potential for more consistent trigger frequency.
| Title | RTP | Volatility | Max Win | Max Ways | Unique Feature |
|---|---|---|---|---|---|
| White Rabbit Megaways | 97.72% | V.High | 10,000× | 248,832 | Expanding reels — unique to White Rabbit |
| Extra Chilli Megaways | 96.19% | High | 50,000× | 117,649 | Gamble feature on spin count |
| Bonanza Megaways | 96.00% | High | 50,000× | 117,649 | GOLD scatter across reels + row |
| Primal Megaways | 96.09% | High | 50,000× | 117,649 | Jungle theme, standard Megaways |
| Donuts Megaways | 96.00% | High | 50,000× | 117,649 | Wild multipliers in base game |
| Lil' Devil | 96.00% | High | 50,000× | 117,649 | Devil/angel feature path selection |
Author's tip from Sophie Hartwell, Casino Content Writer & Bonus Specialist: "Most BTG players default to Bonanza because it's the most discussed title in the community. But if your goal is maximum return on a regular BTG budget, White Rabbit is the rational choice. The 97.72% RTP versus Bonanza's 96.00% means you're paying 1.72% less in house edge per spin. On a £500/month slots budget that's approximately £8.60 less in expected losses every month, while playing a game with a higher max ways (248,832 vs 117,649). White Rabbit is the better title by every metric except name recognition."
The Megaways licence — how it shapes the wider market
BTG's Megaways patent created a two-tier market. Original BTG titles — Bonanza, White Rabbit, Extra Chilli — use the mechanic as designed, with unlimited multipliers and the specific scatter patterns BTG created. Licensed Megaways titles from other providers use the same reel engine but implement their own bonus features, multiplier structures, and win caps.
The critical difference for players: many licensed Megaways titles cap their multiplier at 10× or 15× during free spins. BTG originals carry no multiplier cap — the multiplier can theoretically reach any value through successive cascades. This single difference has significant implications for peak session potential. A BTG original with an excellent feature can produce multipliers of 50× or higher. A licensed title that caps at 15× will never exceed that regardless of cascade count. When evaluating any Megaways slot, the first question to ask is whether the multiplier is capped. See the Megaways slots page for the full landscape.
Bonus buy is disabled for all BTG slots at UK casinos under UKGC regulations. All BTG titles contribute 100% to wagering requirements, making them fully eligible for welcome bonus clearance. For the individual Bonanza Megaways guide see the Bonanza Megaways page. For all providers in the lobby see the providers hub. For Megaways across all studios see Megaways slots.
18+ only. BTG slots are certified by independent RNG testing laboratories. Bonus buy disabled for UK players across all titles. For free spins offers that include BTG titles, check the promotions page. Back to all providers.
Author's tip from Sophie Hartwell, Casino Content Writer & Bonus Specialist: "Extra Chilli's gamble mechanic is the most interesting decision point in BTG's catalogue. When the free spins trigger, you're offered the choice to gamble your way to a higher spin count. The rational approach: if you have enough session budget remaining, take the gamble — the expected value of additional spins at high multiplier potential outweighs the risk of losing the feature entirely, mathematically. If you're near your session budget limit and this is your first or second feature trigger of the session, take the base award. The feature itself is valuable. Don't risk it on a coin flip when you're already stretched."
