Big Time Gaming

How Megaways changed the slot market

Before Megaways, almost every slot used a fixed payline or fixed ways-to-win structure. A 243-ways game had 243 ways on every spin. Megaways broke that by making the ways count a variable, determined fresh each spin by how many symbols each reel shows. The result was a slot that could feel like a different game across consecutive spins, swinging from a handful of ways to win to over a hundred thousand.

The volatility implication was immediate. More ways means more opportunity for cascade chains to build, and the free-spins rounds added an unlimited multiplier that increases by one on each consecutive cascade. A late cascade in a good free-spins sequence can multiply a win by twenty, thirty, or more. Those events are rare, which is why Megaways games are high variance by construction, not just by tuning.

The patent made Megaways a licensing business as much as a slot mechanic. Studios that wanted to use the engine licensed it from BTG, which is why Megaways appears across hundreds of titles from many different studios. Each is its own game, but the fundamental variable-reel logic is BTG’s.

Bonanza: the original template

Bonanza is a gold-mining themed slot that introduced the Megaways format to the market. The grid uses six main reels plus a reactive top row that adds extra symbols when a scatter lands, increasing the available ways beyond the standard maximum mid-spin. Free spins use an unlimited multiplier that climbs by one with each non-empty cascade in the sequence.

What made Bonanza a reference title is that the core mechanic is easy to read. The changing reel heights are visible each spin; the cascade chain is obvious; the multiplier counter is prominent. Complex mechanics that are hard to follow lose players before the big hits arrive. Bonanza’s simplicity made the Megaways concept accessible and set the template that licensed versions followed.

White Rabbit: the expanding reel variant

White Rabbit takes a different approach to the ways-to-win ceiling. Rather than variable reel heights across all reels, it uses a feature where reels physically expand upward during free spins. Each expansion adds rows to that reel permanently for the remainder of the bonus, building toward a grid that can reach twelve symbols tall on a single reel.

The expanding structure means the session experience is progressive: free spins start with a near-standard grid and accumulate size over the round. The biggest wins come from the last spins of a round where the grid has expanded fully. White Rabbit also has a higher published RTP than Bonanza, and the expanding mechanic is distinct enough that players who have exhausted the Bonanza experience tend to find it a meaningful change rather than a variation.

Extra Chilli and the buy-feature question

Extra Chilli is BTG’s volatile sequel to Bonanza. Thematically it moves from gold mining to Mexican food, but mechanically the most important difference is the bonus buy option, absent in Bonanza. The buy lets you purchase a free-spins round at a fixed stake multiple rather than waiting for scatters to land.

The buy does not improve the RTP or the expected value. It trades a slower grind toward the feature for a single large bet that puts you directly into the high-variance round. On a session with a limited budget, using the buy feature means a single purchase can represent many spins worth of budget spent at once. Players who want to experience the free-spins mechanic quickly or who find the base game slow find it useful; players who prefer extended base-game sessions avoid it.

The licensed Megaways landscape

Because BTG licenses Megaways to other studios, the casino lobby Megaways section is now large and mixed in quality. The licensed titles use the same mechanical foundation but add their own features, themes, and RTP policies. Some, like Gonzo’s Quest Megaways (Red Tiger) and Monopoly Megaways (Big Time Gaming in partnership with Scientific Games), are polished adaptations. Others are routine applications of the mechanic to a generic theme.

When evaluating a Megaways title not made by BTG, check the producing studio and the RTP as you would any other game. The BTG stamp on the mechanic does not guarantee the quality of every licensed use.

Where to play BTG titles

Bonanza, White Rabbit, and Extra Chilli are available at most major licensed operators. Casinos on the crypto casinos and fast-payout casinos lists carry the BTG catalogue with transparent RTP displays and quick withdrawals.

Megaways games are high variance. Most sessions on Bonanza or Extra Chilli will end without a significant win. Set a session budget that reflects that, and do not extend it chasing the multiplier. Need someone to talk to? GamCare and Gambling Therapy are free and confidential.