- A dark new take on Print Studios’ potato slots, with a 5×4 grid, 30 paylines and 14 SuperSpinners
- Two Mystery Features in the base game that fill the grid with matching symbols
- The Potato Plague Bonus, where infected positions and growing multipliers build up across the round
Rotten Potato is a Print Studios slot released on 21 October 2026, just in time for Halloween. The royal court of potatoes has fallen, and its posh spuds have mutated into something much darker.
It keeps the 5×4 grid and SuperSpinners that fans of the series will know, then adds an infection theme. The bonus is built around a plague that spreads across the reels, a bit like the real potato blight, only with much better results for the player.
Reels, Paylines and Stakes
Rotten Potato plays on 5 reels and 4 rows, with 30 paylines. The official gamesheet lists a minimum bet of €0.10, a default bet of €2 and a maximum bet of €50.
The RTP is 96.26%. The volatility is rated 9 out of 10, so this is a high risk game, and the max win is 20,000x the bet. Great Britain is listed among the markets the game is made for.
SuperSpinners
SuperSpinners are Print Studios’ signature feature, and there are 14 of them sitting between the reels. Each one can show a number. If a winning line passes through a numbered SuperSpinner, the win is multiplied by that number.
If a line crosses more than one numbered spinner, the multipliers are applied one after the other, which means they multiply together rather than simply being added. On a 30-line game with 14 spinners, a single line can pass through several of them, and that is where the big base game wins come from.
Mystery Features
Before the wins are worked out, one of two Mystery Features can trigger. Both fill part of the grid with Mystery Symbols, and all of them then turn into the same paying symbol. This makes it much easier to land long line wins.
- Potato Horde: covers a block from 2×2 up to the full 5×4 grid with Mystery Symbols
- Spreading Fungus: covers between 4 and 20 random positions with Mystery Symbols
A full 5×4 Potato Horde would turn the whole grid into one symbol, which shows how much these features can change a spin.
RECOMMENDED CASINOS TO PLAY Rotten Potato
The Potato Plague Bonus
Landing 3, 4 or 5 Scatters in the base game starts the Potato Plague Bonus:
- 3 Scatters give 10 free spins
- 4 Scatters give 12 free spins
- 5 Scatters give 14 free spins
At the start of the round, a 1×2 Rotten Potato Wild locks onto the middle reel and stays there for the whole feature. This is what starts the plague.
Infected Positions
Whenever the Rotten Potato Wild is part of a win, every position used in that win becomes infected for the rest of the bonus. Random infections can also strike after any spin. If you started the bonus with 5 Scatters, a random infection is guaranteed on every spin.
Infected positions act as Mystery Symbols whenever symbols land on them. Since all Mystery Symbols turn into the same paying symbol, each new infection makes it easier to land wins. Wins that include the Rotten Potato Wild then infect even more positions, so the effect snowballs as the round goes on. Print Studios calls it a bonus built on exponential growth.
Infection Stages
As the plague spreads, a meter moves through 5 stages, each stronger than the last. Reaching a new stage gives you extra spins and unlocks bigger extra multiplier values for the SuperSpinners.
On each spin, the extra multiplier you have built up is shared out at random among the SuperSpinners on the grid. So the deeper into the plague you go, the higher the SuperSpinners can climb. Print Studios says the payout potential grows the deeper into the plague you go, and with more infected positions on the grid as well, the later spins of a long bonus are the ones to watch.
Bonus Buy
There is a bonus buy option in some markets, but it is not available to UK players.
About Print Studios
Print Studios has made several potato games, including Royal Potato and Royal Potato 2, and it calls SuperSpinners its signature mechanic. Rotten Potato takes the same base and gives it a darker look with a new bonus. Our Punk Penguin review covers another recent Print Studios release.
Overall
Rotten Potato is a clever twist on a well-loved series. The SuperSpinners give every line win a chance to be multiplied, and the two Mystery Features can turn a quiet spin into a grid full of matching symbols.
The Potato Plague Bonus is the real draw. The locked Rotten Potato Wild starts the infection, infected positions keep turning into Mystery Symbols, and the five stages add extra spins and bigger SuperSpinner multipliers as the round goes on. It is a bonus that clearly gets better the longer it lasts.
It also has a clear sense of progress that many bonus rounds lack. You can see the infection spread across the grid and the meter move through its stages, so you always know how well the round is going and what the next stage could bring.
With a volatility rating of 9 out of 10, it is not for players who want steady small wins. For fans of Print Studios and anyone who enjoys a bonus that builds towards a big finish, it is well worth a try.