Megaways Slot Mechanics Explained: How the Engine Actually Works

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Short Answer: Megaways is a slot mechanic created by Big Time Gaming that can change the number of symbols shown on the reels from spin to spin. That changing layout changes the number of possible ways to win.

A familiar six-reel Megaways setup can reach 117,649 ways, but that number is not universal. RTP, volatility, cascades, free spins, multipliers, and maximum ways depend on the exact title.

By Miles Carter, Sweeps Flow Editorial | Updated September 2026

Megaways slots can look chaotic because the grid refuses to sit still like a normal, well-behaved rectangle.

The changing reel heights are the point. They alter the number of symbol combinations available on each spin while the game's own math determines RTP, volatility, payouts, and bonus behavior.

Quick Take

  • Megaways is a slot mechanic, not one game or one fixed math model.
  • Big Time Gaming created the mechanic and licenses it to other game developers.
  • Reel heights can change from spin to spin.
  • The number of ways depends on the reel configuration used by that title.
  • 117,649 ways is common in six-reel Megaways games, but it is not a universal maximum.
  • Cascades, reactions, free spins, multipliers, and feature buys are title-specific features rather than requirements of Megaways.
  • More ways does not automatically mean higher RTP or better odds.
  • Check the exact game's RTP, volatility, paytable, and feature rules.

What are Megaways slot mechanics?

Megaways slot mechanics are built around changing reel heights. Instead of every reel showing the same number of symbols every spin, each reel can show a different number. That changes how many possible winning paths exist on that spin.

In a standard 6-reel Megaways layout, each reel may show a set number of symbols within the game’s rules. Many well-known implementations use 2 to 7 visible symbols per reel, though some games can set different minimums or layouts.

Megaways describes the reel mechanic, not the complete math model. RTP, volatility, maximum ways, and bonus features still belong to the individual game.

Who created Megaways?

Big Time Gaming created Megaways. Dragon Born was one of its earliest implementations, and Bonanza became one of the mechanic's defining early releases in 2016. BTG's own materials describe Dragon Born as the first Megaways slot and Bonanza as an early expansion of the system. 

Evolution acquired Big Time Gaming in 2021. BTG continues to develop games and license the Megaways mechanic to other studios. 

Games using the Megaways license can have very different RTP, volatility, reel layouts, bonus features, and maximum ways.

How do Megaways variable reels work?

Standard slots usually keep the same reel shape from spin to spin. Megaways games change the visible symbol count on the reels each spin. The random number generator, or RNG, decides the outcome according to the game’s programmed rules.

Then the game counts wins using “ways to win” instead of fixed paylines. A winning combination usually needs matching symbols to appear on adjacent reels from the left, though exact rules vary by game.

Here is the simple math:

Ways to win = reel 1 height × reel 2 height × reel 3 height × reel 4 height × reel 5 height × reel 6 height

Example Reel Heights Calculation Total Ways
2-2-2-2-2-2 2 × 2 × 2 × 2 × 2 × 2 64
3-3-3-3-3-3 3 × 3 × 3 × 3 × 3 × 3 729
4-4-4-4-4-4 4 × 4 × 4 × 4 × 4 × 4 4,096
5-5-5-5-5-5 5 × 5 × 5 × 5 × 5 × 5 15,625
6-6-6-6-6-6 6 × 6 × 6 × 6 × 6 × 6 46,656
7-7-7-7-7-7 7 × 7 × 7 × 7 × 7 × 7 117,649

The big number is real for many standard 6-reel Megaways layouts, but it only appears when every reel lands at the maximum visible height. The 117,649 maximum appears when all six reels show seven positions in this standard configuration.

How do cascading wins work in Megaways games?

Many Megaways titles add cascading wins, also called tumbles or avalanche wins. This is not exclusive to Megaways, but it is a very common pairing.

Here is the usual flow:

  1. The reels spin and land.
  2. The game checks for winning ways.
  3. Winning symbols disappear from the grid.
  4. New symbols drop into the empty spaces.
  5. The game checks again for new wins.
  6. The cascade continues until no new win forms.

Many Megaways titles pair variable reels with cascading wins, often called reactions, tumbles, or avalanches depending on the provider. This feature is common, but it is separate from Megaways itself.

One initial spin can create several win events if the reactions continue.
Cascades do not make a game more generous by default. RTP and volatility describe different parts of the game's math profile.

How do Megaways bonus rounds work?

There is no standard Megaways bonus round. Free spins, scatter triggers, increasing multipliers, retriggers, expanded reels, special wilds, and other modifiers depend on the title. Some well-known Megaways games pair free spins with reactions and a growing multiplier. Other games use completely different feature structures.

Check the game's rules for the trigger, starting multiplier, reset conditions, retriggers, and any changes to the reel layout. A long stretch without the feature does not mean the bonus is due. Previous spins do not create a schedule for the next result.

Responsible play note: Treat slot play as entertainment, not income. Set spending and session limits before you start, and do not keep playing because a bonus feels overdue.

How do RTP and volatility work in Megaways slots?

Megaways does not set RTP or volatility. Both belong to the individual game and, where multiple approved configurations exist, the specific version being offered. Check the current game information rather than relying on a generic “Megaways RTP range.” 

Some well-known Megaways titles are high-volatility games, but that does not make high volatility a requirement of the mechanic.

What to Check Why It Matters Player-Protective Read
Published RTP Shows the long-run theoretical return for the game version. Compare it, but do not expect your session to match it.
Volatility or variance label Indicates how uneven results may be Expect wider swings on higher-volatility games and set spending/session limits before play
Bonus trigger rules Explains how the feature starts. Do not assume the bonus will arrive quickly.
Multiplier rules Shows how bonus wins can grow. Know whether multipliers reset, increase, or carry within the feature.
Maximum prize Shows the game's published outcome cap It is a cap, not an expectation, and does not tell you RTP by itself

Megaways details experienced players check

Do not confuse more ways with higher RTP

A larger ways count gives the game more possible symbol-position combinations for that layout. It does not tell you the game's long-run return.

Two games can both advertise 117,649 ways and still have different RTP, volatility, paytables, and feature math.

Check whether 117,649 is really the maximum

The familiar number comes from six reels with seven available positions:

7 × 7 × 7 × 7 × 7 × 7 = 117,649

Other licensed Megaways layouts can go higher. Pragmatic Play's Great Rhino Megaways was released with up to 200,704 ways, while BTG's Gold Megaways can reach 1,000,000 ways during its feature.

Save the exact game details

If you compare the same title across operators, record the provider, displayed RTP, volatility, version information where shown, and date checked.

Same artwork does not guarantee the same configuration.

Check what happens to multipliers

Find out when a multiplier starts, what increases it, and when it resets. A multiplier that survives an entire feature works very differently from one that resets sooner.

Check whether the bonus changes the grid

Some titles increase reel heights or maximum ways during a feature. If the headline says “up to” a large number of ways, check whether that number applies to every spin or only part of the game.

Treat reactions as part of the original game sequence

A cascade can create several evaluated grids from one initial wager. Do not confuse additional reactions with separate paid spins when reviewing what actually happened in a session.

Practical example: Why the ways count changes so much

Imagine one Megaways spin lands with these reel heights:

3-6-4-7-5-3

The ways calculation is:

3 × 6 × 4 × 7 × 5 × 3 = 7,560 ways

On the next spin, the reels may land:

2-2-3-4-2-3

That becomes:

2 × 2 × 3 × 4 × 2 × 3 = 288 ways

The same title can therefore show very different ways counts from one result to the next.

Where can you find Megaways slots at sweeps casinos?

Game catalogs change. Search the operator's current lobby for Megaways, the exact title, or the game provider.

Availability can differ by operator, state, and play mode. Open the game information before playing to confirm the title, provider, RTP where published, and active balance.

What to read next

For the underlying game math, read Sweeps Casino RNG: How It Works, the canonical What Is RTP at a Sweeps Casino? guide, and Slot Variance Explained.

If a cold run has you wondering whether game outcomes are being manipulated, read Are Sweepstakes Casinos Rigged? Math, RNG, Audits, and Red Flags Explained. 

Sweeps Flow Take

Megaways changes the reel layout and therefore the number of available ways from one result to another. It does not automatically raise RTP, improve the odds, or make a game high volatility.

Check the exact title's RTP, volatility, reel rules, reactions, and bonus conditions. The giant ways counter is excellent at getting attention. The info screen has the useful numbers.

FAQs about Megaways slot mechanics

What does Megaways mean in slots?

Megaways means the slot uses a variable-reel engine that changes the number of visible symbols on each reel. This changes the number of possible ways to win on every spin.

Are Megaways slots higher RTP than regular slots?

Not automatically. Megaways is a reel mechanic, not an RTP setting. Check the published RTP for the exact title and version.

Why do Megaways games feel so streaky?

Volatility, not the Megaways label itself, determines how swingy a game is. Higher-volatility titles can produce longer quiet stretches and wider swings, while other Megaways games may behave differently. Check the game's own volatility information where available.

Can I play Megaways slots at sweepstakes casinos?

Some sweepstakes casinos offer Megaways titles depending on their current provider catalog and location rules. Search the game library and check the active play mode before playing.

Does more Megaways mean better odds?

No. A larger ways count means more possible symbol-position combinations for that reel layout. RTP, symbol probabilities, paytable values, and feature math determine the game's long-run return.

 

 

Affiliate disclosure: Sweeps Flow may receive compensation if you sign up through some links on our site. Our editorial guidance stays focused on player protection, clear terms, and practical comparison.

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