Medusa's Stone – What Is This Slot?
Medusa's Stone is a 5-reel, 20-payline slot game from Pragmatic Play. Released on 13 June 2024, it is set in Ancient Greece with stone statues, columns and an ethereal blue-lit temple. Players control the game to discover the exploits of various Greek legends, including the fearsome and beautiful Medusa.
The game features a unique 3-4-4-4-3 grid where reels 1 and 5 contain 3 rows of symbols each. Reels 2, 3 and 4 each contain 4 rows of symbols. The middle three reels have more rows to provide for more potential winning symbol combinations, and these are the reels that are impacted by the feature of the same name.
The central mechanic, the Medusa Spin, can occur on any game spin, whether it is during the base game or during Free Spins. When the feature activates, all symbols of the characters on reels 2, 3 and 4 are replaced with Wild symbols for that play. These Wild symbols will substitute for all other symbols on the reels except for Bonus and Super Bonus symbols.
The game offers two bonus game features. The first is triggered when three Bonus (Medusa's head) scatter symbols land on reels 1, 3 and 5. This will award the player with 10 Free Spins. The second bonus game is Super Free Spins. For this feature to be triggered, three Super Bonus symbols must land during a Medusa Spin while in Free Spins mode. This will award 12 Free Spins.
The game also features a Buy Feature allowing players to directly purchase either Free Spins or Super Free Spins. The Buy Feature can be used while playing the base game. Players can also play Hyperplay mode.
How to Play Medusa's Stone
The game uses a unique 3-4-4-4-3 grid - reels 1 and 5 have three rows of symbols each while reels 2, 3 and 4 each have four rows of symbols. The game has 20 fixed paylines. All winning symbol combinations pay from left to right starting from the leftmost reel. All wins are multiplied according to the player's bet per line. Wins from each payline are paid out individually as the highest winning combination for that line. All wins from the player's spins are added to the total win. Wins from Free Spins are also added to the total win.
- Players set the total bet before each spin. The minimum bet is $0.20 for 20 paylines at $0.01 per line. The maximum bet allowed for the game is $240.00. The default bet for the game is $2.00. There is no Ante Bet.
- Pressing the Spin button will start the game and spin the reels. As the reels spin, symbols will land on each reel. Players win if there are three or more of the same symbols lined up on any of the 20 paylines.
- During any spin, the feature known as the Medusa Spin has the potential to trigger. During a Medusa Spin, all of the characters' symbols on reels 2, 3 and 4 are transformed into Wild symbols for that particular spin.
- If three Bonus (Medusa's head) symbols land on reels 1, 3 and 5 during the base game, the player will be awarded 10 Free Spins.
- During Free Spins, the chance of the Medusa Spin becoming active is the same as during the base game. When the Medusa Spin becomes active during Free Spins, the Wild symbols of the characters will be awarded a multiplier between 2x and 6x. These multipliers will remain on the reels on screen until they contribute to a winning symbol combination.
- If the player lands three Super Bonus symbols during a Medusa Spin while in Free Spins mode, the player will be awarded 12 Free Spins (Super Free Spins). This feature cannot be retriggered.
- The game ends if the total win of a round reaches 7,000x the player's total bet for that round. When the game ends in this situation, the total win will be capped at 7,000x the total bet amount.
Medusa Spin – Turning Heroes to Wilds
The main gameplay feature of the game, the Medusa Spin, can be triggered at random on any spin of the game. This can occur during the base game as well as during Free Spins.
- The symbols of the characters that are present on reels 2, 3 and 4 are changed into Wild symbols - they are petrified by the gaze of the Medusa.
- These new Wild symbols will contribute to the player's winnings by substituting for any other symbols on the screen except for Bonus and Super Bonus symbols.
- During the base game, the Wild symbols will not have any additional value to the player's winnings. They will simply contribute to their wins as any other Wild symbol would do.
- During the bonus game of Free Spins, these Wild symbols will have a random multiplier that contributes to the player's winnings as well as the base value of the Wild symbols.
Each of the middle three reels contains four rows of symbols. Thus, if the Medusa Spin lands on a reel that contains only character symbols, all four of the characters' symbols will be replaced with Wild symbols. This yields a maximum of 12 Wild symbols within the game.
The base game feature of the Medusa Spin has a random frequency at which it triggers for players to enjoy. The frequency at which this feature will trigger during the base game is not disclosed by the game.
During the bonus round of Free Spins mode, the frequency of the occurrence of the Medusa Spin is higher than in the base game.
Free Spins – Multiplier Wild Meter
If three Bonus (Medusa's head) scatter symbols land on reels 1, 3 and 5 during the base game, the player will be awarded 10 Free Spins. During these Free Spins, the special reels will be active for the player. These special reels include the Medusa Spin which can be triggered during this bonus round. The difference between the base game and these Free Spins is that the character Wild symbols created through the Medusa Spin will have a random multiplier that can be seen on each of these Wild symbols.
How the Multiplier Meter Works
- During the bonus round of Free Spins mode, when the Medusa Spin becomes active, the character symbol that is replaced with a Wild symbol will be awarded a random multiplier between 2x and 6x.
- The Wild symbols with the multipliers will remain on the screen if they are not used to create a winning combination in that spin.
- The value of the Wild symbols' multipliers will be added to a meter whenever they are used to create a winning combination of symbols.
- The player's winnings from the Free Spins will be multiplied by the total of the multipliers' values in the meter.
- Each of the Wild symbols that are created during a Free Spin will have their individual multipliers added to the total winning meter for that round. Thus, if a 4x Wild and a 6x Wild are used to contribute to winning combinations during that spin, the player's winnings will be multiplied by 10x.
Super Free Spins – Upgraded Multipliers
The special feature known as Super Free Spins mode is activated during the bonus round of Free Spins mode if three Super Bonus symbols are landed during a Medusa Spin in Free Spins mode. During this mode, the chance of encountering a Medusa Spin is much higher than outside of the bonus game or during the Free Spins mode.
| Free Spins | Super Free Spins | |
|---|---|---|
| Spins awarded | 10 | 12 |
| Trigger | 3 Bonus on reels 1/3/5 | 3 Super Bonus during FS Medusa Spin |
| Wild multiplier range | 2× – 6× | 4× – 8× |
| Medusa Spin frequency | Standard | Increased |
| Retrigger | No | No |
The same rules regarding the multipliers as applied to the Free Spins mode apply during this mode as well. However, the minimum value of the multipliers is 4x instead of 2x as with the Free Spins mode. Furthermore, the chance of encountering a Medusa Spin during this mode is higher than during the base game or the Free Spins mode. Thus, this mode is more powerful than the base game mode. Neither the Super Free Spins mode nor the Free Spins mode can be retriggered during the game.
Buy Feature – Skip Straight to Free Spins
The game includes two Buy Feature options for players to purchase in order to start the bonus game features of the game.
| Option | Cost | Feature Triggered | Buy RTP |
|---|---|---|---|
| Buy Free Spins | 75× total bet | 10 Free Spins (standard) | 96.50% |
| Buy Super Free Spins | 200× total bet | 12 Super Free Spins (upgraded multipliers) | 96.53% |
Symbols & Paytable
The game includes four premium hero and heroine symbols, two weapons symbols of the medium pay value, four card royal symbols with low pay value as well as the Bonus, Super Bonus and Wild symbols. The Bonus and Super Bonus symbols are limited to reels 1, 3 and 5 of the game. The game paytable displays all wins at a total bet of $1.00 (20 lines at $0.05 per line).
| Symbol | 5 of a Kind | 4 of a Kind | 3 of a Kind |
|---|---|---|---|
| ⚔️ Hero 1 (bearded warrior) | $25.00 | $5.00 | $2.50 |
| 🛡️ Hero 2 (young champion) | $12.50 | $3.75 | $1.25 |
| 🗡️ Hero 3 (dark warrior) | $10.00 | $2.50 | $1.25 |
| 👸 Heroine (queen) | $5.00 | $2.00 | $1.00 |
| 🗡️ Sword | $2.00 | $1.00 | $0.50 |
| ⛑️ Helmet | $2.00 | $1.00 | $0.50 |
| 🔤 Ace | $1.00 | $0.50 | $0.25 |
| 🔤 King | $1.00 | $0.50 | $0.25 |
| 🔤 Queen | $1.00 | $0.50 | $0.25 |
| Special Symbols | Notes |
|---|---|
| 🐍 Wild | Substitutes for all except Bonus and Super Bonus; created by Medusa Spin from character symbols on reels 2–4 |
| 🏺 Bonus Scatter | Reels 1, 3, 5 only — 3× triggers 10 Free Spins |
| 🏺 Super Bonus Scatter | Reels 1, 3, 5 only — 3× during a Free Spins Medusa Spin triggers 12 Super Free Spins |
The characters' symbols that are displayed on reels 2, 3 and 4 will be transformed into Wild symbols during a spin of the game. These Wild symbols will contribute to the player's winnings during Free Spins mode as well.
RTP & Variance Explained
The game features a standard RTP of 96.46%. This is above the average value for slot games. However, the Buy Feature variants of the game have slightly higher RTPs: 96.50% for the Free Spins mode and 96.53% for the Super Free Spins mode. Two variants of the game with a slightly reduced RTP of 95.54% and 94.50% may be active at some online casinos. The game has low volatility so players will experience winning spins from the base game with its 20 paylines. Furthermore, the 3-4-4-4-3 grid layout will provide for more opportunities for wins from the middle reels which have a higher chance of receiving the Medusa Spin. The maximum winning potential of 7,000x is strong for a game with such low volatility. This can be achieved during Free Spins when the player receives a high total value for the multipliers meter.
| RTP Version | RTP |
|---|---|
| Standard | 96.46% |
| Buy Free Spins (75×) | 96.50% |
| Buy Super Free Spins (200×) | 96.53% |
| Reduced variant 1 | 95.54% |
| Reduced variant 2 | 94.50% |
Our Verdict
✅ Pros
- Medusa Spin is a genuinely elegant mechanic — intuitive and visually dramatic
- Multiplier Wilds that persist until used add real strategic tension to Free Spins
- Super Free Spins tier with 4×–8× multipliers and elevated Medusa frequency
- 7,000× maximum win is impressive for low volatility
- Unique 3-4-4-4-3 grid layout creates an immersive asymmetric field
- Two Buy Feature tiers — both with RTP close to or above the base rate
- 96.46% standard RTP is above average
❌ Cons
- Super Free Spins requires a specific within-bonus condition — difficult to reach organically
- No retrigger on either Free Spins tier
- Reduced RTP variants (95.54%, 94.50%) active at some operators
- Low volatility base game can feel routine before a Medusa Spin fires
- Buy Super Free Spins at 200× is a high-cost entry point
Medusa's Stone FAQ
The game features a standard RTP of 96.46% when playing the base game. The RTP increases to 96.50% if the Buy Feature for Free Spins is purchased. The RTP increases to 96.53% if the Buy Feature for Super Free Spins is purchased. Two reduced variants of the game exist with an RTP of 95.54% and 94.50% respectively, though these may only be active at certain online casinos.
The maximum win for the player is 7,000 times the player's total bet for that round. If any round reaches a total win of 7,000 times the total of the player's total bet for that round, that round will end and the win will be paid out at the cap of 7,000x.
The Medusa Spin can be triggered at random during any spin of the base game. During the spin, the characters' symbols on reels 2, 3 and 4 are transformed into Wild symbols. These Wild symbols will substitute for any other symbols on the screen on the mentioned reels except for Bonus and Super Bonus symbols. Furthermore, during Free Spins mode, each of the characters' symbols that are transformed into Wild symbols will also be awarded a random multiplier between 2x and 6x. Each of these multipliers will remain on the reels until they are used to contribute to a winning combination in that spin.
During Free Spins mode, each of the Wild symbols that are created as a result of the activated Medusa Spin will be awarded a random multiplier between 2x and 6x. Whenever a Wild symbol with a multiplier is used to contribute to a winning combination during that spin, that symbol's value will be added to a meter total for that player's spin of the Free Spins. After the spin, the player's winnings will be multiplied by that total value in the meter.
If three Bonus symbols (Medusa's head) are landed on reels 1, 3 and 5 during the base game, 10 Free Spins will be awarded. During these bonus spins, the chance of triggering a Medusa Spin is the same as during the base game. Furthermore, the characters' symbols that are transformed into Wild symbols during a Medusa Spin will be awarded a random multiplier between 2x and 6x. The other feature that can be triggered during Free Spins mode is the Super Free Spins mode which can be awarded by landing three Super Bonus symbols during a Free Spins round while a Medusa Spin is active. In this mode, the chance of encountering a Medusa Spin is higher than during the base game or during Free Spins mode. Furthermore, the multipliers for the Wild symbols will range between 4x and 8x.
The game includes two Buy Feature options which cost the player 75x the total bet amount for the purchase of Free Spins. During this mode, the player will be awarded 10 Free Spins. The other Buy Feature costs 200x the total bet amount for the purchase of the Super Free Spin which includes 12 bonus spins.
The unique layout for this game is the 3-4-4-4-3 grid. This layout includes reels 1 and 5 displaying 3 rows of symbols each. The middle three reels 2, 3 and 4 each contain 4 rows of symbols. This layout gives the middle of the game more opportunities to land winning combinations. Furthermore, it is the middle section of the game that is affected by the Medusa Spin.