All Peter & Sons Slots: Games, Mechanics and Where the Studio Sits
Peter & Sons is the Armenian and Spanish studio that has spent since 2019 building slots that look hand painted and play like they were designed by someone who enjoys watching a balance swing about. It works out of Yerevan and Barcelona under the Maltese company Spinart Ltd, and the catalogue has passed 45 slots and scratch titles. Almost everything it ships runs high volatility with a persistent multiplier of some kind sitting at the heart of the bonus, and the artwork is the giveaway: thick outlines, painted textures and a cast of grubby cartoon characters that no other studio would sign off. Artifacts and Greedy Alice are the two Peter & Sons games reviewed here in full, and both show the studio’s habit of letting a multiplier keep climbing once free spins begin.
Where to Play
18+ only. T&Cs apply. Please gamble responsibly.
Peter & Sons at a Glance
| Peter & Sons Developer Info | |
|---|---|
| Studio | Peter & Sons |
| Parent Company | Spinart Ltd, the Maltese company named in the studio’s own site footer under licence MGA/CRP/681/2019 |
| Founded | 2019, with development offices in Yerevan, Armenia and Barcelona, Spain |
| Games Released | More than 45 slots and scratch titles. Counts vary because some review databases also fold in regional variants and scratch cards, which pushes their totals nearer 68 |
| Speciality | Painterly, character-led video slots with high volatility maths; no live casino or table content |
| Flagship Title | The Barbarossa line, which began with Barbarossa DoubleMax and has since grown into Barbarossa Revenge and Barbarossa Dragon Empire |
| Signature Feature | A multiplier that resets every base spin but stops resetting the moment free spins start |
| Common Mechanics | Cascading wins, cluster and ways pays, reel multipliers, symbols that upgrade into wilds, ante bets and feature buys |
| Other Themes | Fairy tales turned nasty, gangsters, folklore, pirates, science fiction and the occasional talking animal |
| Highest Max Win | 40,000x stake on Barbarossa Dragon Empire |
| Distribution | Its own Spinart Games Platform, plus the Yggdrasil YG Masters programme it joined in 2020, which is how DoubleMax and Gigablox turn up in its games |
| Licences | The studio lists the Malta Gaming Authority and the UK Gambling Commission alongside New Jersey, Ontario, Denmark, Sweden, Greece, Italy, Germany, Brazil and Argentina |
Top Peter & Sons Slots
Two titles have full reviews here so far. They use different grids but the same thinking underneath, which makes them a useful pair for seeing what the studio actually does.
A tavern full of mercenaries on a 5×3 grid paying 243 ways. Three reel multipliers sit above the middle columns and only stop resetting once free spins begin. 96.26% RTP and a 20,000x ceiling.
Wonderland with the varnish stripped off. A 6×5 cluster grid, no paylines at all, and a multiplier ladder that climbs with every cascade and carries through the bonus, capped at 20,000x.
The rest of the catalogue has not been reviewed here individually yet. The Barbarossa line covers Barbarossa DoubleMax, Barbarossa Revenge and Barbarossa Dragon Empire. Around them sit Ghostfather, Book of Books, Peter Hunter, Abrakadabra and Monster Blox, and the more recent shelf runs Roman Glory, Tango of Chaos, Roadquake, Bunny Heist, Rust World, Soapranos, Ginger Wins, Cyber Runner, Bear Patrol, Big Bounty Bandits: 3 Pots and the sequel Greedy Alice 2: Bigger Bites.
Peter & Sons in Action
This is Greedy Alice mid session, and it is a fair advert for how the studio lays a screen out. The multiplier ladder runs down the left in five steps marked x1, x2, x4, x8 and x16, with the current rung highlighted. The reels sit inside a painted circus wagon parked in a lollipop forest, filled with spade, club and heart pips, green boxes, yellow crosses and a row of grinning toothy monster heads. A gold crown labelled Golden Bet sits to the right, the ante option that UK-licensed operators do not carry. Note the counters along the bottom: this capture runs in euros, with the balance at 11,000.00 and the bet at 1.00.
Features Peter & Sons Is Known For
Multipliers that stop resetting
This is the studio’s single most recognisable habit. In the base game a multiplier climbs during a cascade chain and then wipes at the end of the spin, which keeps ordinary spins cheap. Enter free spins and the reset is switched off, so the number carries from spin to spin for the whole round. It is the reason a Peter & Sons bonus can look pedestrian for four spins and then produce the entire session in one. Games built on the same idea are gathered on the increasing multipliers page.
Play’n GO working the same trick from a honeycomb grid, where the multiplier steps up as the cascade chain lengthens rather than as reels are covered.
Yggdrasil ties its multiplier to unlocking blocked reel positions, which gives the climb a visible progress bar instead of a hidden counter.
Cascading grids
Peter & Sons rarely builds a slot where symbols simply stop. Winners clear, replacements drop, and the grid is scored again until nothing new lands, which is what gives the multipliers something to count. The studio uses cascades on both ways-pays and cluster layouts. The cascading wins directory covers the wider family.
A cascade slot that leans on symbol upgrades between drops rather than a running multiplier, so the chains matter for a different reason.
Relax Gaming clears blocking stones as the cascades run, opening the grid wider the longer a chain survives.
Ante bets and feature buys
Nearly every recent release carries a Golden Bet style ante that raises the stake in exchange for better bonus odds, plus a menu of direct buys at fixed multiples of the bet. Neither is available to players at Great Britain licensed casinos, because the Gambling Commission does not permit feature purchases here. The games still work without them, but the maths was tuned with them in mind, so a UK build can feel slower to trigger than a review video suggests.
Related Theme
Swords, wizards, monsters and folklore run through most of the catalogue, which puts the bulk of the studio in the fantasy theme slots category. These are the closest matches already reviewed on the site.
Play’n GO’s cascading wizard slot, where the multiplier climbs with each consecutive win and the art has the same storybook thickness.
A forest full of creatures with a growing multiplier attached to the bonus, close in spirit to the Peter & Sons approach even though the studio is different.
Heavier and darker in tone, and a useful contrast for how a fantasy grid feels when the multiplier is tied to collected symbols instead of cascades.
About Peter & Sons
Artists first, mathematicians second
The studio describes its team as artists, mathematicians and musicians, and the order is telling. A Peter & Sons game is recognisable from a lobby thumbnail long before you know what it does, which is a commercial advantage most small studios never manage. The trade is that the mechanics tend to be variations on a theme rather than genuinely new engines. Cascades, a climbing multiplier and a free spins round that removes the reset describes a large share of the catalogue.
The Yggdrasil route to market
Joining YG Masters in 2020 was the decision that put these games in front of a UK audience. It gave the studio access to Yggdrasil’s distribution and to house mechanics such as DoubleMax and Gigablox, which is why a title like Barbarossa DoubleMax carries a feature name that is not really Peter & Sons’ own. Seeing one of these games in an operator lobby usually means the operator carries the Yggdrasil feed rather than a direct deal with the studio.
What the volatility actually means
Average RTP across the catalogue sits around 96.3% and hit frequency around a quarter of spins, which sounds unremarkable. The distribution is where the games get their reputation. Base-game returns are deliberately thin so that the free spins round can carry a 20,000x or 40,000x ceiling, and that gap between typical and possible is wider here than at most studios. Sessions are long and flat with occasional violence, and anyone who dislikes that shape will dislike the whole catalogue rather than one game in it.
Checking the version you are playing
Peter & Sons supplies more than one RTP configuration on several titles, and operators choose which to run. The headline figure quoted in reviews is the default rather than a guarantee, so the game information screen at your casino is the only version that counts. That is worth a look before a session on any of these games, not just the newest ones.
Peter & Sons Questions
Who owns Peter & Sons?
The studio operates under Spinart Ltd, the Maltese company named in its own site footer alongside licence number MGA/CRP/681/2019. It is not owned by a larger group in the way that many studios are, though its route to most operators runs through the Yggdrasil YG Masters programme.
How many slots has Peter & Sons made?
More than 45 slots and scratch titles since 2019. Some review databases quote higher totals nearer 68 because they count regional variants and scratch cards as separate entries, so treat any exact number as approximate.
Are Peter & Sons games available in the UK?
Yes. The studio lists a UK Gambling Commission licence alongside its Malta licence, and its games appear at British-facing casinos. The ante bets and feature buys built into those games are not offered here, because the Commission does not allow feature purchases.
What is the biggest win on a Peter & Sons slot?
Barbarossa Dragon Empire carries the highest documented ceiling at 40,000x stake. Artifacts and Greedy Alice, the two titles reviewed on this site, both cap at 20,000x, which is more typical of the studio’s recent output.
Which Peter & Sons game should I try first?
Artifacts is the easier read of the two reviewed here: five reels, 243 ways, and three multipliers you can watch climb. Greedy Alice asks more of you, because a cluster grid with no paylines takes a few spins to get a feel for. Both run high volatility, so neither is a gentle introduction in the maths sense.