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Pie Rats Slot Demo by Keystonestudios

Pie Rats Slot Demo by Keystonestudios slot cover image
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Written by Secod on 27-10-2026

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Pie Rats by Keystonestudios Slot Overview

Pie Rats by Keystonestudios pairs cartoon pirate rats with pastry warfare, a harbour backdrop and gold accents. Its cascading clusters and Wild multipliers share mechanics with Dragonspire, but here winning clusters collect adjacent Pies while Keys unlock neighbouring Chests.

Beyond its high-volatility cluster gameplay, Rat Race replaces the reels with a randomly assigned rat and prizes for podium finishes. During Free Spins, Pie Cannon and Wild Bomb symbols create Wild Pie symbols with additive multipliers. Explore these features in the free demo on BonusTiime.

Pie Rats slot gameplay reels
Base game reels in action

Pie Rats Slot Specifications

Pie Rats uses a 6×7 grid with Cluster Pays. The house edge sits at 4.00%.

RTP (Return to Player)

96.00% RTP is a long-run theoretical average. The house edge sits at 4.00%.

Volatility

High volatility means bigger swings and longer dry spells, so bankroll control matters.

Max Win

50,000x the bet is the cap; a €1 spin tops out at €50,000.

Pie Rats Slot Features

Pie Rats slot intro screen
Intro screen of Pie Rats

Cluster Pays, Free Spins, Wild Pie Symbol, Pie Cannon, Wild Bomb, Parrot Symbol, Insta-Pie Symbols, Key Symbols and Chest Symbols, and Rat Race give Pie Rats a busy ruleset with layered collections, cascades, and bonus choices.

Free Spins

Three or more Scatter symbols anywhere on the grid trigger Free Spins. The award starts at 5 Free Spins plus 1 for every Scatter symbol, and the same rule applies to retriggers. During this mode, Cannon symbols and Wild Bomb symbols can appear.

Free Spins do not need another bet, and their wins add to the round. The mode also allows boosted symbols with multipliers, which carry through to the new Wild Pie Symbols they create. This keeps the bonus focused on chain reactions rather than simple line hits.

Wild Pie Symbol

The Wild Pie Symbol replaces any high-paying or low-paying symbol and pays at that symbol’s cluster rate. Five or more connected Wild Pie Symbols pay once as the Cap’n Ratty symbol. It can join more than one cluster, and the shared symbol removes only once.

It does not stand in for Scatter symbols, Key symbols, Chest symbols, Insta-Pie Symbols, Parrot Symbol, Wild Bomb symbols or Cannon symbols. In Free Spins, Cannon symbols and Wild Bomb symbols turn regular symbols and Insta-Pie Symbols into Wild Pie Symbols, while multipliers stay attached to boosted Wild Pie Symbols.

  • Cap’n Ratty symbol: five or more connected Wild Pie Symbols pay once at this rate.
  • Shared Wild Pie Symbol: one symbol can count in several clusters.
  • Boosted Wild Pie Symbol: keeps its multiplier through cascades.

Wild Bomb

The Wild Bomb appears in Free Spins only. It turns a block around itself into Wild Pie Symbols, including its own cell. The block size can be 1×2, 2×2, 2×3 or 3×3, and the blast itself pays nothing.

Insta-Pie Symbols inside the block pay at once and become Wild Pie Symbols. Scatter symbols, Key symbols, Chest symbols and other feature symbols in the block stay put. Embers can then fly to 2 to 8 other regular symbols or Insta-Pie Symbols and convert them too.

  • 1×2 block: converts a narrow area.
  • 2×2 block: converts a small square.
  • 2×3 block: converts a wider rectangle.
  • 3×3 block: converts the largest shown area.
  • Embers: convert 2 to 8 additional symbols.

Pie Cannon

The Pie Cannon appears in Free Spins only. It fires at an area of the grid and turns that rectangle into Wild Pie Symbols. The shot can cover 2×2 up to 4×4, and the Cannon symbol itself becomes a Wild Pie Symbol.

Feature symbols in the marked area stay protected, so the blast only changes the intended cells. An Insta-Pie Symbol hit by the shot pays immediately and becomes a Wild Pie Symbol. Firing itself pays nothing, but boosted shots pass their multiplier to every Wild Pie Symbol they create.

  • 2×2 shot: affects a compact area.
  • 4×4 shot: affects the largest shown area.
  • Boosted Cannon symbol: passes its multiplier to created Wild Pie Symbols.

Insta-Pie Symbols

Insta-Pie Symbols show 5x, 10x, 25x, 50x or 100x the total bet. They do not pay as cluster symbols. Instead, they pay only when a listed collector or hit condition resolves them, and each one pays once.

A Cannon shot, Wild Bomb blast or ember can pay an Insta-Pie Symbol straight away in Free Spins. A Parrot Symbol collects every Insta-Pie Symbol still on the board before clusters are paid. If one remains, it can also pay when it touches a winning cluster by a side.

  • 5x: base Insta-Pie value.
  • 10x: higher Insta-Pie value.
  • 25x: stronger collector value.
  • 50x: high Insta-Pie value.
  • 100x: top Insta-Pie value.

Parrot Symbol

The Parrot Symbol collects every Pie symbol on the board, and it has no prize of its own. If more than one Parrot Symbol lands, each Pie symbol still pays only once. With no Pie symbols to collect, the collection pays nothing and the symbol is removed anyway.

The same collecting role applies to Insta-Pie Symbols, which the Parrot Symbol gathers before cluster payouts. That makes the feature useful for clearing scattered values before the board resolves into cluster wins. It adds timing depth without changing the base cluster rules.

  • Pie symbols: collected across the board once.
  • Insta-Pie Symbols: collected before cluster payouts.
  • No collection target: the Parrot Symbol pays nothing.

Key Symbols and Chest Symbols

Key Symbols open any Chest symbol that touches them by a side. Corners do not count. Each opened Chest symbol pays the value printed on it once, as a multiple of the total bet. A Key symbol with no Chest symbol pays nothing and can stay for a later cascade.

Chest symbols keep their values until they are opened, while unopened chests stay shut. This gives the feature a simple but useful adjacency rule inside the cluster engine, because the game resolves Keys and Chest Symbols before clusters. It is a clean collection mechanic rather than a separate bonus screen.

  • Wooden Chest symbol: pays 25x when opened.
  • Bronze Chest symbol: pays 100x when opened.
  • Silver Chest symbol: pays 250x when opened.
  • Gold Chest symbol: pays 1Kx when opened.
  • Key symbol: opens an adjacent Chest symbol.

Rat Race

Rat Race replaces the reels with a race instead of a normal spin. A rat is drawn at random, and that draw does not change the prize. First place pays 50,000 times the bet, second pays 5,000 times the bet, and third pays 2,500 times the bet.

The finishing order is decided before the race starts, so the pies around the track only add spectacle. Cannons fire pies at the runners, and hits can slow them briefly. Splat marks also slow them while they move through the track, but the result stays fixed.

  • First place: pays 50,000 times the bet.
  • Second place: pays 5,000 times the bet.
  • Third place: pays 2,500 times the bet.
  • Later places: pay nothing.

Bonus Buy

The menu holds five paid options. Each cost is a multiple of the current total bet and is charged on top of play.

  • More Booty: x2.5 the bet per spin; one paid spin with richer specials on the grid.
  • Pillager: x20 the bet per spin; one paid spin with more Scatter symbols, for a stronger chance of Free Spins and a higher starting count.
  • Bonus: x100 the bet; a paid spin with exactly 5 Scatter symbols, which awards 10 Free Spins, and the wins on that spin are included.
  • Super Bonus: x250 the bet; a paid spin with exactly 10 Scatter symbols, which awards 15 Free Spins with a denser feature mix.
  • Rat Race: x1,000 the bet per spin; a race instead of the reels, with the podium prizes above.
Pie Rats bonus buy menu
Bonus buy options and prices

Where to Play Pie Rats by Keystonestudios

Pie Rats is a Stake exclusive and can only be played on Stake.com through the Stake Engine: Stake is currently the only casino offering Keystonestudios content for this title.

  1. Stake: play Pie Rats with €30 free for a €20 deposit

    8.9/10 BonusTiime score

    • BonusTiime exclusive€30 free for a €20 deposit
    • Wageringx1 on the €30
    • Min deposit€20
    • AvailabilityStake only
    • Game studios672

    Code BONUSTIIME

    Play Pie Rats at StakeStake reviewOffer details18+ · T&Cs apply

Pie Rats Slot Review

Pie Rats builds its identity around a pirate bakery mash up, with rats, pies, cannons and treasure chests packed into a dark, gold trimmed interface. The cluster based layout and the oddball theme work together, but the presentation stays more practical than memorable.

Gameplay leans on high volatility, cascades and a long list of modifiers, so the action can swing sharply from quiet boards to busy bonus chains. The standout is Rat Race, which swaps the reels for a fixed race outcome, but that novelty sits beside a lot of familiar cluster slot structure.

Pie Rats has a 50,000x cap that ends the round when reached, including any Free Spins still remaining. The problem is that the base game still relies on standard cluster and collection rules, so the design feels inventive in parts rather than across the whole round.

Slot Rating
6.8

BonusTiime Score

Decent Slot
—

User Score (0 rating)

No Ratings Yet

Pie Rats Slot FAQ

How Do Free Spins Trigger In Pie Rats?

Three or more Scatter symbols anywhere on the grid trigger Free Spins. The award starts at 5 Free Spins, plus 1 for every Scatter symbol. During Free Spins, Cannon symbols and Wild Bomb symbols can appear, and retriggers use the same rule.

What Do The Buy Options Cost And Give?

Pie Rats offers five buy options. More Booty costs x2.5 the bet, Pillager costs x20, Bonus costs x100 for 10 Free Spins, Super Bonus costs x250 for 15 Free Spins, and Rat Race costs x1,000 for a race with podium prizes.

What Is The Max Win In Pie Rats?

The maximum win is 50,000x the bet. The rules say reaching it ends the round, including any Free Spins still remaining. On the published data, a €1 stake caps at €50,000, which gives the slot a clear ceiling for every round.

Can You Play Pie Rats For Free?

Yes, Pie Rats has a free demo on this BonusTiime page. You can play it without a deposit or account, which makes it easy to test the cluster pays gameplay, Free Spins, Bonus Buy options, and Rat Race before deciding whether to move to real play.

How Does The Signature Rat Race Mechanic Work?

Rat Race replaces the reels with a race instead of a normal spin. A rat is drawn at random, and that draw does not change the prize. First place pays 50,000x the bet, second pays 5,000x, and third pays 2,500x. The finishing order stays fixed.

Written by Secod

SEO Strategist & Casino Content Specialist

Before specialising in SEO and editorial strategy, Secod spent thousands of hours streaming and testing slot games extensively. This high-volume gameplay experience allows him to analyse volatility patterns, bonus frequency, feature depth and provider mechanics with accuracy. Every slot review he produces reflects genuine testing experience rather than theoretical summaries.

6.8

BonusTiime Score

Decent Slot
—

User Score (0 rating)

No Ratings Yet

Quick Infos

  • RTP96%
  • VolatilityHigh
  • Max Win50,000x
  • ProviderKeystonestudios
  • Min / Max Bet€0.10 – €1,000
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