Megaways originated with BTG in 2015 and became a licensed mechanic that Pragmatic Play and others began implementing across their portfolios. The core idea is simple: each reel has a variable height that changes with each spin. A reel might display three symbols one spin and four symbols the next. The total number of winning combinations multiplies accordingly.
A game with three reels at four symbols each offers 64 combinations. A Megaways game with the same reels varying from two to six symbols offers up to 7,776 combinations on certain spins. This mechanical complexity creates the appearance of volatility-dampening. More ways to win should mean more frequent wins, therefore lower variance. The marketing emphasizes this consistently.
Consider two games with identical RTP of 96 percent. Game A has 20 ways to win. Game B has 100,000 ways to win. If Game B has more ways but the same RTP, it must have lower average win sizes across those ways. The distribution of payoff must compress. If Game A pays 100 credits for hitting the top symbol combination once every 1,000 spins, Game B pays perhaps 2 credits for hitting it once every 50 spins.
Psychological Compression
More frequent wins, lower magnitude. The RTP is identical, but the playing experience is completely different. The effective RTP in practice often becomes lower because of a secondary effect: the increased complexity of the pay table creates opportunities for player misunderstanding. A traditional slot pay table is transparent: hit this combination, you get 50 credits.
A Megaways pay table is more opaque. A win of 0.5x your bet times a multiplier occurring across multiple simultaneously active ways feels abundant until you realize it is smaller than the traditional payout for the same symbol combination. Casinos understand this psychology perfectly. Pragmatic Play's research showed that players feel they are winning more frequently on Megaways games even when the win rate is identical to traditional slots.
Variance in Megaways games is genuinely different. Frequently hitting 0.2x or 0.3x your bet creates the illusion of regular small wins. But the big hits come much less often because the payout table has compressed them. A player on a Megaways game with 96 percent RTP might experience extended periods of hundreds of spins without hitting a win larger than their bet.
Despite constant small positive returns, the larger picture is erosion. On a traditional 96 percent slot, large wins cluster slightly more frequently. The long-term math is the same, but the playing experience differs substantially. Bet multipliers and bonus features in Megaways games often compensate for this compression, which is where the marketed excitement resides.
The Real Cost
A Megaways free-spin feature can hit with enough frequency that the volatility-dampening effect mostly vanishes in practice. But the base game, spinning without bonuses, operates at meaningfully lower effective RTP once you account for player behavior and decision-making. A player chasing wins might stick with a traditional slot longer because occasional moderate wins give them something tangible.
The same player on a Megaways slot might experience 200 spins of constant micro-wins and micro-losses that leave them with diminished bankroll and a sense that they were playing all along but never actually winning anything. Both games could be 96 percent RTP. The experience is entirely different. The effective outcome for the player depends on when they decide to stop, and Megaways structures extend that timeline through the illusion of continuous action.
BTG licenses Megaways to dozens of providers now, and each adapts it differently. Some versions restore volatility through high-value free-spin triggers. Others double down on the compression. As of 2024, a player comparing RTPs on paper should expect that a Megaways game with published 96 percent RTP will pay out slightly less effectively (around 95.2 percent) than a traditional slot with the same published RTP.
