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What Is a Megaways Slot? A Beginner's Guide to How They Work

5 min read readBy Diego ThompsonMarch 17, 2026

What Is a Megaways Slot? A Beginner's Guide to How They Work

If you've spent any time browsing an online casino's slot section, you've almost certainly come across the Megaways label. Titles like Bonanza, Extra Chilli, and Buffalo King Megaways have attracted enormous followings. But what actually makes a Megaways slot different from a standard game — and why are they so popular?

The Megaways Mechanic Explained

Megaways is a proprietary slot mechanic developed by Big Time Gaming (BTG), an Australian studio later acquired by Evolution. The core innovation is a variable reel system: each spin, the number of symbols displayed on each reel changes randomly. A standard Megaways game uses 6 reels, and each reel can display between 2 and 7 symbols per spin.

The number of "ways to win" is calculated by multiplying the number of symbols on each reel together. With 7 symbols on all 6 reels, there are 7 × 7 × 7 × 7 × 7 × 7 = 117,649 ways to win from a single spin. On low-reel configurations, that number drops dramatically, creating a constantly shifting experience with each spin.

How Wins Are Paid

Unlike traditional payline slots, Megaways games don't use fixed paylines. Instead, wins occur when matching symbols land on adjacent reels from left to right, regardless of their vertical position. This "ways" system means any combination of adjacent matching symbols counts as a win, which is why the variable reel height matters so much.

Most Megaways titles also use a cascade (or avalanche) mechanic: winning symbols are removed after each win, and new symbols fall to replace them. If new winning combinations form, the cascade continues — creating the potential for chain reactions from a single spin.

Free Spins and Multipliers

The free spins rounds in Megaways slots are where the big win potential is realised. Most games include an increasing multiplier that rises with each successive cascade during free spins. A long cascade chain can push multipliers into the hundreds, which — combined with the maximum 117,649 ways to win — creates enormous theoretical win potential.

Which Megaways Slots Are Most Popular?

Bonanza Megaways (Big Time Gaming) remains the original and is still widely played. Buffalo King Megaways (Pragmatic Play), Primal Megaways (Blueprint), and Gonzo's Quest Megaways (NetEnt) are among the most-played licensed titles using the mechanic.

Should You Play Megaways Slots?

Megaways games are typically high-volatility — you can go many spins without a significant win, but the reward when it comes can be substantial. If you enjoy high-risk, high-reward gameplay and you're comfortable with variance, Megaways slots offer some of the most exciting experiences in the online casino space.

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