Medusa’s Stone

In 2024 Pragmatic Play stacked a whole shelf of Greek-themed slots, and Medusa’s Stone is easy to mistake for yet another cascading “Gates of”. Easy — and wrong: there are no cascades here at all. This is rigid 20 fixed paylines on an unusual 3-4-4-4-3 grid, where the Gorgon’s gaze does the heavy lifting. At random in the base game the Medusa Spin turns the central column to stone: the character symbols on reels 2-3-4 all become Wilds at once — and in free spins those Wilds pick up a multiplier and stick to the screen until the first shot fires.

The base RTP is 96.46%, volatility is high, the ceiling sits at 7,000x your bet, the range runs 0.20–240 EUR. The grid has a variable height — three symbols on the outer reels, four on the three middle ones, 18 positions in all under 20 lines. The slot’s entire added value sits in the sticky Medusa Wilds with a multiplier: no coefficient in the base, up to x6 in the bonus, up to x8 in the Super mode.

What is the Medusa Spin and why is this not another “Gates of”?

First thing to pin down: there are no tumbles or cascading chains here. Medusa’s Stone is a classic linear slot paying left to right across 20 fixed lines, and the unusual 3-4-4-4-3 grid is not Megaways with a variable number of ways — it is simply a field widened in the centre. Widened with a purpose: those three middle reels of four symbols each are the working zone of the main mechanic.

The Medusa Spin fires at random in the base game: Medusa’s gaze sweeps the field and petrifies every character symbol on reels 2-3-4 into a Wild. So the Wilds appear not one by one but as a batch right in the centre of the field — and since the lines run left to right through those three columns, a single petrification often completes several lines at once. In the base these Wilds carry no multiplier — there the Medusa Spin works on hit frequency, not on size.

How do the sticky multipliers wind up the free spins — and where is the 7,000x cap?

Three scatters trigger 10 free spins, and here the Medusa Spin switches roles. Now every petrification gives the Wilds a random multiplier of x2–x6, and they stay on screen until they take part in a win — that is, they stick for several spins, accumulating. If a single Medusa Spin builds a field with several sticky Wilds of different multipliers on one line, the coefficients on that line multiply together — hence the theoretical 7,000x ceiling.

Now the number-crunch — that is what makes it worth comparing the two. The ordinary mode: 10 spins, the multiplier floats from x2 to x6, the floor of x2 is half the Super version’s minimum. Super Free Spins: 12 spins, the floor lifted to x4, the cap up to x8, and the Medusa Spin fires more often. Roughly estimate the expected value of a hit: the expected multiplier of a single Wild in the ordinary bonus averages across x2–x6, about x4; in Super it averages across x4–x8, about x6. That is one and a half times higher per Wild, plus 2 more spins and denser petrifications. The gap between the two modes is not cosmetic: Super is not merely “a bit better”, it systematically shifts the whole curve upward, and that is exactly where the 7,000x lives.

Waiting for three scatters is optional: the Bonus Buy opens ordinary free spins for 75x your bet, Super Free Spins for 200x. If the Greek theme landed, we have one more ancient slot — Oracle of Gold.

How do 20 lines and sticky multipliers split the payback, and which build are you on?

A base RTP of 96.46% is right at a decent average for modern Pragmatic — not outstanding, but not trimmed either. Volatility is high: the base, on a Medusa Spin with no multipliers, feeds you sparingly, the real earnings are locked into the free spins, and the 7,000x ceiling is a coincidence of several sticky Wilds with top multipliers on one line — a rare event, not one that lands on every second player.

Will the gaze turn your luck to stone, or is 7,000x just a pretty number?