Megaways Slots Explained — How the Mechanic Works

Megaways — The Mechanic That Changed Slot Design

Megaways is a slot mechanic created by Australian developer Big Time Gaming that fundamentally altered how paylines work. Instead of a fixed number of ways to win — the 10, 20, or 50 paylines that traditional slots use — Megaways games generate a variable number of symbols on each reel with every spin. The number of ways to win changes dynamically, reaching a theoretical maximum of 117,649 on a standard six-reel configuration. The mechanic was patented and then licensed to other studios, which is why you’ll find Megaways games from Pragmatic Play, Red Tiger, Blueprint Gaming, and others alongside Big Time Gaming’s original catalogue.

Before Megaways, slot design had spent decades iterating within the same payline framework. Fixed lines across fixed reels produced fixed maximum ways to win. The visual presentation evolved — themes got more elaborate, bonus features got more complex — but the underlying structure remained constant. Megaways broke that structure by making the reel configuration itself a variable. Every spin generates a new layout, creating a sense of mechanical unpredictability that fixed-payline slots can’t replicate. The feeling of watching a spin resolve with seven symbols on every reel — maximum ways, maximum potential — is viscerally different from watching the same fixed grid resolve identically every time.

The licensing model amplified the mechanic’s impact. Rather than keeping Megaways exclusive, Big Time Gaming licensed it to competing studios. This meant the mechanic appeared across dozens of themes and design philosophies within a few years, embedded in games from virtually every major provider in the UK market. Megaways became a category rather than a single game — a shared mechanical language that players could recognise and seek out regardless of the specific title or studio behind it.

How Variable Reels and 117,649 Paylines Work

A standard Megaways slot uses six reels. On each spin, every reel independently generates between two and seven symbols. The total number of ways to win is calculated by multiplying the symbol count on each reel together. If all six reels display their maximum of seven symbols, the result is 7 × 7 × 7 × 7 × 7 × 7 = 117,649 ways to win. If each reel shows only two symbols — the minimum — the ways to win drop to 2 × 2 × 2 × 2 × 2 × 2 = 64. Every spin lands somewhere between these extremes, with the exact number displayed prominently on the game interface.

Wins are formed when matching symbols appear on adjacent reels from left to right, regardless of their vertical position. Because the number of positions per reel varies, the probability of any specific symbol appearing on a given reel changes with each spin. More symbols on a reel mean more potential winning combinations but also more non-matching symbols diluting the probabilities. The maths is more complex than fixed-payline slots, but the player experience is straightforward: bigger reel configurations mean more ways to win, which means higher potential payouts from any individual spin.

Most Megaways slots include a cascading reels mechanic — sometimes called “reactions” or “tumbles” — where winning symbols are removed from the grid after a win, and new symbols drop into the vacated spaces from above. If the new configuration produces another winning combination, the cascade repeats. This chain reaction continues until no more wins form, and all wins from the cascade sequence are paid from a single bet. Cascading reels add a multiplier dimension that doesn’t exist in traditional spin-and-stop slots: each consecutive cascade within a sequence can increase a win multiplier, meaning the later wins in a chain are worth more than the first.

The bonus round in most Megaways titles is a free spins feature where the cascading multiplier carries over between spins rather than resetting. In Big Time Gaming’s Bonanza, for example, each cascade during free spins increases the multiplier by one, with no upper limit. A free spins round that produces multiple cascades across several spins can build the multiplier to 10x, 20x, or occasionally much higher, making the bonus round the primary source of the game’s large-win potential. This escalating multiplier mechanic is the mathematical engine behind the high volatility that defines most Megaways games.

Top Megaways Titles and Their RTP Data

The Megaways catalogue at UK casinos is extensive, but certain titles have established themselves through a combination of compelling design, competitive RTP, and enduring player popularity. Knowing the standout games and their published return figures gives you a starting point for navigating the category.

Bonanza Megaways from Big Time Gaming is the original and arguably still the benchmark. The mining theme is secondary to the mechanic, which showcases cascading reels and an unlimited free spins multiplier to full effect. The published RTP is 96.00%, with high volatility and a maximum win potential of 10,000x the bet. Bonanza remains one of the most widely available Megaways titles across UK casino lobbies.

White Rabbit Megaways, also from Big Time Gaming, pushes the reel mechanic further by allowing individual reels to expand to twelve symbols during the bonus round, increasing the maximum ways to win to 248,832. The published RTP is 97.72% — significantly above average and one of the highest returns in the Megaways category. The game’s Wonderland theme and extending reels mechanic distinguish it from the standard six-reel-seven-symbol format.

Gonzo’s Quest Megaways from Red Tiger Gaming applies the Megaways engine to a modern reimagining of NetEnt’s classic Gonzo’s Quest, combining the cascading mechanic with an expanding multiplier trail. The RTP is 96.00%, with high volatility and a maximum win capped at 20,000x. The game demonstrates how the licensed Megaways mechanic integrates with existing franchise concepts from other studios.

Gates of Olympus from Pragmatic Play is technically not a Megaways game — it uses an “all ways pay” mechanic rather than the licensed Megaways variable reel system — but it’s frequently grouped with Megaways titles in player discussions because it shares the cascading reels and escalating multiplier structure. The RTP is 96.50%, with very high volatility and a maximum win of 5,000x. Its inclusion here reflects how the Megaways mechanic has influenced broader slot design philosophy, with competing studios building games that capture the same feel without licensing the specific patent.

When evaluating any Megaways title, check the RTP at the specific casino where you’re playing. Several Megaways games are available in multiple RTP configurations, and operators can select a lower-return version. The published maximum RTP and the casino’s deployed RTP may differ. The game’s information screen should display the active configuration.

More Ways to Win Doesn’t Mean More Wins

The headline number — 117,649 ways to win — sounds like it should mean you win more often. It doesn’t. The number of ways to win describes the possible winning combinations on a maximum-symbol spin, but the probability of any individual combination forming is adjusted by the symbol weighting on each reel. More positions per reel means more potential combinations but also more non-matching symbol arrangements. The hit frequency of Megaways games isn’t dramatically different from traditional slots — it’s the distribution of win sizes that changes.

What Megaways does change is the concentration of value. The cascading multiplier mechanic and the variable reel size create a distribution where the vast majority of spins produce small wins or losses, and a small number of spins — particularly during the bonus round — produce results many times the bet. This is the definition of high volatility, and it means Megaways games require the bankroll patience and session budget that any high-volatility slot demands.

The mechanic is impressive. The maths is compelling. The games are some of the best-designed in the UK market. But more ways to win is a structural description, not a promise. The ways are there. Whether they resolve in your favour on any given spin is determined by the same random number generation that governs every other slot in the lobby. Play Megaways for the mechanic, the cascading excitement, and the bonus round potential — not for a misunderstanding of what 117,649 actually means for your balance.