The top reel on Power of Merlin Megaways doesn't hold symbols like the other six. Instead it fires down a Lightning Bolt that picks one paying symbol at random and turns every copy of it into a wild across reels 2 to 5. That single mechanic, more than the wizard theme or the tumbling reels underneath it, is what this release is built around, and it's worth walking through in detail before touching anything else.
How the Lightning Bolt actually works
Each spin gives the top horizontal reel a chance to trigger. When it does, the game selects a symbol type on the board and reskins every instance of it as a wild, instantly. Because Power of Merlin Megaways runs on a 6-reel Megaways grid with up to 117,649 ways to win, one well-timed bolt can turn a scattered handful of matching symbols into a connected line running from left to right. The feature isn't reserved for the bonus round either, it can strike on any base game spin.
What makes it more than a gimmick is how it interacts with the tumble mechanic sitting underneath it. Winning symbols clear from the board, new ones drop in to fill the gaps, and if the Lightning Bolt fires again during that cascade, it can convert a fresh symbol type before the tumble sequence even finishes. Chains like that are where the bigger multi-step wins come from, rather than any single oversized payout on one static grid.
Free spins and the multiplier that survives every tumble
Landing four or more scatter symbols sends the game into free spins, with the exact count of scatters deciding whether the player gets 10, 20, or up to 30 spins. The feature that carries the round is a persistent win multiplier, and it climbs by 1x every single time a tumble produces a new win, not just once per spin. On a Megaways board with tumbling reels, one scatter trigger can chain through several tumbles in a row, so the multiplier can stack meaningfully across a single spin before the round even ends. Combined with Lightning Bolt strikes, which are still active during free spins, this is the engine behind the 40,000x maximum win.
Wilds, bonus buy, and the rest of the toolkit
Aside from the Lightning Bolt, a standard wild symbol can land on reels 2 through 6 and substitutes for everything except the scatter, giving the tumble sequences another route into a connected win without needing the bolt to fire. For players who don't want to grind toward the scatter trigger organically, a bonus buy option pays 150x the stake to jump straight into the free spins game, landing with 4 to 7 scatters guaranteed and therefore a better starting spin count than the base game average.
Where this one fits
The 96.08% RTP sits within a fairly typical range for a Megaways title, and the high volatility rating means this isn't a slot built for steady, frequent returns even with a 20% hit rate. Long droughts between anything sizeable are part of the design, offset by the possibility of the tumble multiplier and Lightning Bolt lining up across the same spin. Betting runs from $0.20 to $100, wide enough to scale the swings up or down without changing how the maths behaves.
This is a slot for players who already like Megaways and tumble engines, and specifically for those drawn to a bonus mechanic that reshapes the board rather than just adding extra wilds. Players who prefer steadier, more frequent returns are better served elsewhere.
Bottom Line
Whether Power of Merlin Megaways is worth your time depends on your tolerance for variance and how the theme reads to you. Players who want the slot's specific feature mix and accept the volatility profile will find consistent engagement here; players who prefer steadier, lower-ceiling action should look at lower-volatility alternatives. The math model and feature design tell you who this is for, the choice to spin is yours.
