Best Big Time Gaming Slots

If you’ve ever played a slot with cascading reels and 117,649 ways to win, you’ve played a Megaways game, and that mechanic was invented by Big Time Gaming. The Sydney-based studio (now part of Evolution Group) has been responsible for some of the most patented and licensed mechanics in modern slot design, including Megaways™, Megaclusters™, Megaquads™, Megapays™, and Megapots™. This guide covers the 10 best Big Time Gaming slots available right now, ranked for variety across mechanics, themes, and player segments.

Best Big Time Gaming Slots at a Glance

Big Time Gaming Pty Ltd is based in Sydney, Australia and was acquired by Evolution Group in 2021. BTG’s slot game software portfolio includes 40+ Megaways titles and dozens more across the studio’s other patented mechanics. Use the “Best For” column as your guide, then scroll down for the full review of each game.

Best Big Time Gaming Slots List

1. Bonanza – Best Original Megaways Slot

• RTP: 96.11% | Volatility: High (37.94% Hit Frequency) | Max Win: 26,000x bet
• Reels and Rows: 6×7 | Max Ways to Win: 117,649
• Headline Features: Megaways, Dual Reactions, Free Spins with Unlimited Win Multiplier, Bonus Buy
• Release Date: December 2016

Bonanza is the slot that started it all. When BTG released the title in December 2016, the Megaways mechanic was a complete first for the industry: a variable-reel system where each of the six reels could randomly display 2 to 7 symbols per spin, generating anywhere from 64 to 117,649 ways to win on a single spin. Every modern Megaways slot in the iGaming industry, regardless of provider, runs on a mechanic licensed back to this 2016 release.

The mining theme is centred on Mt Cashmore, a Wild West gold rush location where carts roll across the top of the reels feeding additional symbols into reels 2 through 5. Dual Reactions is the cascade mechanic: winning symbols don’t just disappear, they react and are replaced by new symbols cascading from above (regular reels) and from the right (extra reel above), creating a dual-direction cascade that runs until no further wins occur.

The Free Spins trigger is the GOLD scatter sequence: spelling out G-O-L-D with four scatters unlocks 12 Free Spins, with +5 extra spins for every additional Scatter. During Free Spins, the Win Multiplier increases by +1 with every reaction, with no cap. The cart system above the reels also delivers stacked Free Spins Scatters: 3 stacked = +5 spins, 4 stacked = +10 spins. Bonus Buy purchases 12 Free Spins for 90 times the stake.

2. Bonanza Falls – Best Latest Bonanza with Megadozer

• RTP: 96.52% | Volatility: High (39.70% Hit Frequency) | Max Win: 93,540x bet
• Reels and Rows: 6×7 | Max Ways to Win: 117,649
• Headline Features: Megaways, Megadozer, Win Exchange, Bonus Buy
• Release Date: December 2023

Bonanza Falls takes the iconic Bonanza setup and layers on the Megadozer mechanic introduced in BTG’s later releases. The 6×7 grid keeps the 117,649 Megaways ceiling and the dual-direction cascade, but the Free Spins round runs on a completely different reward engine.

The Megadozer Free Spins feature is triggered by spelling GOLD with the scatters. Once active, players are awarded 12 Free Spins with a coin dozer mechanic above the reels: shimmering gold Bonus Coins teeter on a knife edge before falling onto the reels, each one revealing one of four bonuses. The coin reveals can deliver Wilds adorned with multipliers up to x5, repeating symbols with multipliers up to x10, additional Free Spins, or Free Spins Win Multiplier boosts that compound the existing multiplier ceiling.

Win Exchange runs alongside Bonus Buy as a second feature-entry path: when a base game win reaches 25 to 100 times the stake, the player can exchange the entire win for a gamble with the chance of being awarded 12 Free Spins. At 100 times the stake or more, players can directly trade 100x stake for 12 Free Spins. Bonus Buy purchases 12 Free Spins for 100 times the stake.

3. White Rabbit 2 – Best Highest Max Win Potential

• RTP: 96.36% | Max Win: 133,100x bet
• Reels and Rows: 5×7 | Bet Range: 0.20 EUR to 7.40 EUR
• Headline Features: Cupcake Symbol expansion, Hold and Spin with Megapots, character-based bonus prizes, Bonus Buy
• Release Date: November 2025

White Rabbit 2 is the recent sequel to BTG’s 2017 cult classic White Rabbit, and the highest brand-stated max win on this page at 133,100 times the stake. Where the original ran on Megaways with expanding reels, the sequel layers Megapots progressive jackpots and a Hold and Spin mechanic on top of the core Wonderland theme.

The Hold and Spin feature triggers when 6 or more shimmering Coins land anywhere on the reels, awarding 3 enchanted respins. Each symbol on the screen transforms into its own mini-reel during the feature, spinning to reveal Coins that may carry Bonus Prizes, character symbols, or Megapots icons. Each new Coin resets the respin counter to 3. The Hold and Spin Characters add an additional bonus layer with seven distinct effects: White Rabbit multiplies one Bonus Prize up to x10, Alice gains the value of all Bonus Prizes, the Red Queen collects the value of all Bonus Prizes, the Cheshire Cat reveals a prize and adds it to all Bonus Prizes, the Dodo collects the value of all Bonus Prizes on its reel, the Mad Hatter gains one random Bonus Prize value, and the Twins award two Bonus Prizes of the same value.

The Cupcake Symbol mechanic runs across both Free Spins and Hold and Spin: every time a Cupcake lands, it adds an extra symbol to its reel, expanding the grid mid-feature. Three Mini, Midi, and Mega Megapots displayed above the reels showcase random progressive prizes that update with every spin and can only be awarded during Hold and Spin. Filling every reel with Coins doubles the total bonus prize.

4. Holy Diver – Best Reel Adventure Level System

• RTP: 96.58% | Volatility: High (40.58% Hit Frequency) | Max Win: 20,500x bet
• Reels and Rows: 6×7 | Max Ways to Win: 586,971 (at Level 3)
• Headline Features: Reel Adventure, 3-level upgrade system, Chests of Fortune, Shield of Fortune, Bonus Buy
• Release Date: January 2019

Holy Diver introduced the Reel Adventure mechanic to the BTG catalogue and pushes the studio’s Megaways ceiling higher than any other title in the portfolio. The 6×7 grid runs on three progressive levels: Level 1 offers 117,649 Megaways, Level 2 boosts to 396,900 Megaways, and Level 3 unlocks the studio’s highest published Megaways count at 586,971 ways to win.

The Chests of Fortune are the entry point to the level-up system. Chests appear in the base game and offer one of four bonuses on the current spin. The Standard Symbol Bonus transforms a low-value symbol (9, 10, J, Q, K, or A) into a Wild. The Sword Bonus adds up to 3 full-reel Wilds with multipliers up to x7. The Fireball Bonus places up to 4 Flaming Wilds (one per reel). The Gem Symbol Bonus reveals gem symbols and turns them into Wilds with a multiplier matching the player’s current level (Level 1: x1 Wild, Level 2: x2 Wild, Level 3: x3 Wild).

The Shield of Fortune is the level progression system. Treasure chests reveal precious gems that are added to the shield (up to 4 gems revealed per opening). Once all 4 gems are collected, the player chooses to level up or collect Free Spins. Completing Level 3 automatically triggers Free Spins. During Free Spins, every Gem on reels 2 to 5 transforms into a Wild with a level-matched multiplier, and collecting Diamonds during the bonus grants additional spins (the first 4 Diamonds award one extra spin each, the 5th Diamond awards 8 additional Free Spins and triggers a retrigger). Bonus Buy offers three tiered entries: 10 Level 1 Free Spins for 40 times the stake, 10 Level 2 Free Spins for 80 times the stake, or 10 Level 3 Free Spins for 125 times the stake.

5. Big Bucks Deluxe – Best Megapots Progressive Jackpots

• RTP: 96.26% | Volatility: High (35.14% Hit Frequency) | Max Win: 89,200x bet
• Reels and Rows: 6×7 | Max Ways to Win: 117,649
• Headline Features: Megapots progressive jackpots, Hold and Spin, Free Spins with rising multipliers, Bonus Buy
• Release Date: April 2025

Big Bucks Deluxe is one of the flagship Megapots titles in the modern BTG catalogue and uses a glitzy Art Deco aesthetic that sets it apart from the studio’s typical adventure or pop-culture themes. The 6×7 grid runs on the Megapots progressive jackpot system: Mini, Midi, and Mega Megapots are displayed above the reels and showcase random progressive prizes that update with every spin.

The Hold and Spin feature is the only path to Megapots jackpots and triggers when 6 or more Coins land anywhere on the reels. Players start with 3 respins, with each symbol on the screen transforming into a mini-reel during the feature. Coins revealed during respins may hold prize amounts, multipliers, or the Megapots icons themselves. Every time 1 or more new Coins appear, the respin counter resets to 3. At the end of the respins, the total prize amount is multiplied by the total of all revealed multipliers. Collecting 3 matching Megapots icons wins the corresponding jackpot. If every reel reveals a Coin symbol, the Hold and Spin ends with the total bonus prize doubled.

The Free Spins trigger is independent of Hold and Spin: 3 or more brilliant golden stags unlock 12 Free Spins, with 2 extra spins per Scatter beyond the third. During Free Spins, the win multiplier starts at 1 and climbs higher with every Coin that appears. If the Hold and Spin feature is not triggered during Free Spins, each Coin stays locked in place, building anticipation across the bonus. Bonus Buy offers two paths: 35 times the stake unlocks Hold and Spin directly, and 100 times the stake unlocks 12 Free Spins.

6. Cyberslot Megaclusters – Best Megaclusters Cosmic Theme

• RTP: 96.36% | Volatility: High (35.54% Hit Frequency) | Max Win: 31,364x bet
• Grid: 3×3 base game expanding to 9×9 in Free Spins
• Headline Features: Megaclusters splitting symbols, Golden Roaming Wild, Rainbow Roaming Wild, Bonus Buy
• Release Date: December 2020

Cyberslot Megaclusters is the second release in BTG’s Megaclusters series (following Star Clusters Megaclusters) and is built around an 80s synthwave/cyberpunk aesthetic. The Megaclusters mechanic is genuinely different from any other BTG format: the base game runs on a 3×3 grid which expands to 9×9 during Free Spins, and winning symbols don’t just disappear: they split into smaller symbols of the same type, creating chain wins.

The mechanic works as follows. Wins consist of 5 or more matching symbols of any size, horizontally or vertically adjacent. When a win occurs, the matching symbols split: in the base game, each winning position is replaced by 9 smaller symbols; in Free Spins, each is replaced by 4 smaller symbols. When wins occur with smaller symbols, the symbols of the same size above them collapse downwards and new symbols drop from the top. Every spin in the base game also randomly designates 1 position to display 9 smaller symbols from the start.

The Golden Roaming Wild is the slot’s signature feature. The Wild begins with a multiplier of x1, increasing by x1 whenever it substitutes in a win during the first reaction and every second reaction thereafter. The Roaming Wild shifts to a new position after each win in the base game (1 of 9 positions) and during Free Spins (1 of 81 positions). Free Spins are triggered when 12 or more reactions occur in a single base game spin, awarding 6 Free Spins. The Roaming Wild Multiplier carries over from the triggering spin into Free Spins, and every time the Multiplier reaches a multiple of 10 during the bonus, 2 extra Free Spins are awarded. The first retrigger unleashes the Rainbow Roaming Wild, which runs alongside the Golden Roaming Wild for the remainder of the bonus. Bonus Buy purchases 6 Free Spins for 85 times the stake.

7. Danger High Voltage 2 – Best Music-Licensed Slot Sequel

• RTP: 96.77% | Volatility: High (32.60% Hit Frequency) | Max Win: 52,980x bet
• Reels and Rows: 6×7 | Max Ways to Win: 117,649
• Headline Features: Megaways, Megadozer, two distinct Free Spins modes, Bonus Buy
• Release Date: October 2024

Danger High Voltage 2 is the sequel to BTG’s 2017 cult classic Danger High Voltage, which built its identity around the band Electric Six’s hit single “Danger! High Voltage.” The 2024 sequel keeps the music-licensed identity intact while pairing Megaways with the Megadozer coin-drop mechanic introduced in Bonanza Falls.

The Megadozer feature runs above the reels and delivers electrifying Bonus Coins onto the playfield. In the base game, each Bonus Coin reveals one of two rewards: an increment to the current spin’s win multiplier, or an additional Scatter added to the reels (improving Free Spins trigger odds). The slot’s distinctive design choice is the dual Free Spins mode at the trigger point. When 3 or more Scatters land in the base game, the player chooses between two routes: “Fire In The Disco!” Free Spins runs on persistent Wilds, while “Danger Danger!!” Free Spins runs on increasing multipliers.

In the Danger Danger!! mode, each Bonus Coin during the bonus reveals one of two effects: a Feature Wild Multiplier supercharge (the multiplier starts at 2 and increases by 1 each time), or a Wild symbol added to the reels with a multiplier matching the current Feature Wild Multiplier. 3 or more Scatters during Free Spins award 2 extra Free Spins plus 2 more for each additional Scatter. Bonus Buy lets players purchase Free Spins with a choice between Fire In The Disco! or Danger Danger!! at the entry point.

8. Vegas Megaways – Best VIP Gamble for 50 Free Spins

• RTP: 96.32% | Volatility: High (37.04% Hit Frequency) | Max Win: 72,310x bet
• Reels and Rows: 6×7 | Max Ways to Win: 117,649
• Headline Features: Megaways, Dual Reactions, VIP Gamble for up to 50 Free Spins, Free Spins Win Multiplier, Bonus Buy
• Release Date: July 2022

Vegas Megaways layers a casino-themed VIP Gamble round on top of standard Megaways play, giving the slot a quiz-show pacing that’s not present in most other BTG titles. The 6×7 grid runs on Dual Reactions (the same dual-direction cascade as Bonanza), with the extra reel above reels 2 to 5 adding a symbol to the reel below.

The VIP Gamble is the headline mechanic. When 3 Scatters land, the player wins 8 Free Spins and starts the VIP Gamble: a multi-round quiz-style ladder where successful gambles move up rungs in the prize ladder, ultimately reaching up to 50 Free Spins. Unsuccessful gambles may result in loss of Free Spins, but Rung 2 and Rung 7 are safety nets that guarantee 10 and 20 Free Spins respectively. Each gamble is presented with a tip system: “Remove Two” eliminates two incorrect answers, “Winning Odds” reveals the most likely answer, and “All Odds” reveals the chances of each answer being correct. Extra Scatters at the trigger point automatically move the player up the prize ladder.

In Free Spins, the Win Multiplier starts at 1 and increases after every reaction. Free Spins Scatters appear only in the extra reel and award 4 extra Free Spins for 3 Scatters or 8 extra Free Spins for 4 Scatters. Bonus Buy purchases 10 or 20 Free Spins directly.

9. Vegas Rush – Best Megaclusters with Megatrail

• RTP: 96.45% | Volatility: High (35.40% Hit Frequency) | Max Win: 47,200x bet
• Reels and Rows: 5×5 | Max Ways to Win: 100 (Megaclusters)
• Headline Features: Megaclusters, Megatrail with 12 random bonuses, Free Spins with enhanced Megatrail, Bonus Buy
• Release Date: May 2023

Vegas Rush is one of BTG’s most feature-dense slots and combines two trademarked mechanics in a single base game: Megaclusters (split-symbol cluster pays) and Megatrail (a 12-rung bonus ladder). The 5×5 grid runs on cluster pays with up to 100 ways to win per spin via the symbol-splitting mechanic.

The Megatrail is the slot’s signature feature. Every base game spin lights up a 12-rung Megatrail above the reels, with each spin randomly building a new trail containing at least 3 Random Bonuses. Each rung delivers one of 12 distinct effects: Wilds (up to 10 added at random), Multiplier Wilds (up to x5), Symbol Explosions (clears rows or columns), Symbol Subdivide (big symbols split into 4 small ones), Symbol Upgrade (changes to a higher-paying symbol), Symbol to Wild conversion, Mega Wild (a 4-Wild block, doubled in Free Spins), Win Multiplier boost (up to x10), Explosions (up to 3 bomb-style blasts), Symbol Duplication (adds 5 of a chosen symbol in a line), 50:50 (clears half the grid), and Max Megaclusters (big symbols become 4 smaller ones).

Reaching Rung 7 on the Megatrail unlocks the Free Spins round. Players are awarded 6 Free Spins with a new enhanced Megatrail that stays fixed for the entire bonus, loaded with at least 6 Random Bonuses, a Bonus Prize of up to 2,000 times the stake on Rung 12, and retriggers starting again at Rung 7 (each retrigger awards +3 Free Spins). The bonus can scale up to 99 total Free Spins. Bonus Buy purchases 6 Free Spins for 60 times the stake.

10. Castle of Terror – Best 4096 Ways with Win Exchange

• RTP: 96.72% | Volatility: High (31.74% Hit Frequency) | Max Win: 61,720x bet
• Reels and Rows: 6×4 | Max Ways to Win: 4,096
• Headline Features: Holy Water Wild conversion, Free Spins, Enhanced Free Spins, Win Exchange, Bonus Buy
• Release Date: October 2022

Castle of Terror is BTG’s vampire-themed Halloween slot and the only title on this page running on the 4096 Ways format rather than full Megaways. The 6×4 grid uses a vampire-hunter narrative with the Holy Water mechanic as the slot’s signature base-game feature.

Holy Water has a chance to rain down on 2 or more positions across the centre four reels each spin. When Holy Water touches a Lady, Gentleman, Maid, or Gardener symbol, those characters transform into Wilds, and each new Wild adds +1 to the spin’s win multiplier. The mechanic creates a base-game multiplier escalation that’s distinct from BTG’s typical bonus-only multiplier systems.

Free Spins trigger when 3 or more Castle Scatters land, awarding 12 Free Spins plus +3 spins for every extra Scatter. If a Gold Megascatter lands as one of the triggering Scatters, the player unlocks Enhanced Free Spins. In standard Free Spins, Holy Water hits every spin and the multiplier increases by +1 per character-turned-Wild. In Enhanced Free Spins, the multiplier starts at x2 and rises by +2 with every character-turned-Wild, and hitting a multiple of 20x triggers 6 extra Free Spins. Win Exchange runs at the 25 to 100 times stake range, allowing players to gamble a base-game win for 12 Free Spins, with direct conversion at 100 times stake or above. Bonus Buy offers two paths: 12 Free Spins for 70 times the stake or 12 Enhanced Free Spins for 200 times the stake.

Big Time Gaming Slots – Frequently Asked Questions