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Written by: Filip Gromovic Reviewed by: Nashon Khamala

The Piggy Thief slot by Onlyplay is one of the latest entries in the iGaming industry. Released on June 5, 2025, the game is on a mission to steal the spotlight and make a lasting impression among punters with a theme centered around the infamous piggy thief found in children’s mystery books.

You can try the Piggy Thief demo slot through Onlyplay’s website without registration or head over to FreeSlots99 and try your luck with real money. Onlyplay has outdone itself in this one by bringing together the best features from the most popular casino games. In this guide, let’s unwrap all the cool features that make the slot a must-play, one after another.

Theme and Storyline

The first thing you will discover when you launch the Piggy Thief game is how the symbols stick closely to the theme, which is how robbing the bank can be a daring and rewarding adventure. For example, it is hard to talk about crime without mentioning the role of the police. The game has the police van as one of the higher-paying symbols—an ingenious addition that shows how much thought went into this slot’s creation process.

The Piggy Thief online slot tells the story of the infamous masked pig with a gold chain around its neck who is on a mission to empty a bank’s vault under the cover of the night. On the other side is a wolf detective whose main goal is to ensure the piggy’s plan fails. The reels are set on the backdrop of a skyscraper with glowing light-yellow lights adding visibility to the bright moonlight.

Piggy Thief Game Graphics, Sounds and Animations

Onlyplay is one of the software providers that puts extra effort into the visuals and sounds of their games. Piggy Thief was served the same treatment. The game features bright colors with blue (representing safety) and gold (representing the loot) being the dominant hues.

The police van, the wolf detective and a lock symbol that serves as the Wild for the game all have dominant blue colors. However, Onlyplay also ensured that other symbols stay close to their real-world colors, such that players will not find any of them odd.

When you play free Piggy Thief slot machine, you will experience the animation of every symbol as they settle after a spin or when you land a winning combination. In the latter, every symbol that matches on the payline will glow and move around until your next spin. For example, the wolf cop will rock back and forth while rolling their eyes in the process. The sack of coins will jump and bounce, jingling the exposed coins.

All these cool animations are accompanied by cool jazz, the type you will experience when you walk into bars in the 90s. All these features tie together to make the Piggy Thief slot by Onlyplay one of the most adorable releases of 2025, yet.

How to Play Piggy Thief

This is a 5×3 reel slot that appears regular until you start exploring, only to discover that Onlyplay has stuffed so much into this new slot. Once you launch the game, you will be greeted by the colorful grid with the name of the game animated above the middle reel. On the left, you will find the different jackpots, namely Mini, Minor, Major and Grand. We will discuss how to win each jackpot later.

Below the reels, you will find the volume controls and info buttons on the bottom left, which is pretty standard. On the right sits a plus and minus button, which players can use to adjust their bet size. The minimum bet is $1, but you can bump it up to $50.

Next to that is a big green spin button. The Piggy Thief slot by Onlyplay has the Auto Spin feature, which allows you to set the reels to spin from 10 times to infinity. You can also configure your settings for the spin to stop when you win more than a certain amount or your balance increases or decreases by a certain amount.

Gameplay

The Piggy Thief online slot can be played in several ways. You can choose to play like every regular slot, where you spin and hope you land matching symbols on one of the 50 paylines for mouthwatering payouts. Alternatively, if you are not cut out for the regular, click on the «Bonus» button on the top right corner of the reel and purchase the Bank Robbery or Free Spins features. This will shoot you straight into the bonus round. Bear in mind, this feature costs 50x your bet. How you experience the game is totally up to you.

Features

Whether you are playing the Piggy Thief demo slot or spinning with real money in your favorite casino, always look out for the special figures, namely the police siren which serves as the scatter and offer free spins, the bank safe which launches the Bank Robbery feature and the Wild symbol which can substitute any others—except the Safe and Scatter—to form a winning combination. As mentioned above, you can also purchase a bonus round and start it immediately instead of waiting for the winning combination.

Symbols and Payouts

There are 9 regular symbols in the Piggy Thief slot by Onlyplay as well as 3 special symbols, which brings the total to 12. What we do love is how their payouts have been simplified. For example, all the lower symbols, represented by the letters A, K, Q and J, have identical payouts.

Among the regular icons, the three that should excite you the most when they land on the paylines are the pink Piggy Thief with a black mask, the wolf detective and the police van. Piggy Thief is the only figure that pays out when you land two of them on the payline.

The sack of coins and gold bars, all of which have piggy snouts embedded on them, are the two remaining high-paying icons. Here is a rundown of all the regular symbols and their payouts when you land 3 to 5 of a kind on the payline.

The Scatter represented by a police siren on a badge has a special status in the game. Out of the three specials, it is the only one that pays, in addition to triggering the free spins bonus feature. Land 3, 4 or 5 of them on the payline and you will get x2, x15 and x100 of your bet as a reward in addition to 10, 15 and 20 free spins, respectively.

How to Win Piggy Thief Online Slot

Winning will have a slightly different meaning depending on the mode you are playing. For the base game, you win by landing three to five matching figures on one of the 50 paylines. However, there are conditions you must bear in mind, including:

• The matching must start from the first reel on the left.
• When you land matching symbols on two different paylines, the one with the highest payout will be recorded, unlike in some other slots, where all of them will count.
• Landing 3 or more Scatter symbols pays out regardless of their position on the reels, in addition to awarding free spins.

Bonus Features

Among all the bonuses in this game, the one that will thrill punters the most when they play the Piggy Thief online slot is the «Bank Robbery». You can either purchase this feature from the «Bonus» button above the main reel or land 6 or more Safe symbols to unlock this feature. You will get 5 free spins. Only the safe count in the Bank Robbery feature, and it works like stacked wilds. Different Safes will connect and become larger and also increase the payout. Connect up to 6 safes during this stage, and it will unlock at the end of the round and grant a random reward, which could be one of the jackpots.

Free Spins

There are two ways punters can land free spins when playing the base game of the Piggy Thief slot by Onlyplay. The first is by landing three or more Scatter symbols in one spin to get 10 to 20 free spins, depending on the number of scatters you land. The second way is by getting 6 or more Safe icons to launch the Bank Robbery feature and get 5 free spins. Free spins will play at the bet value that triggered the session. The wins during this session will add up and will only be added to your balance at the end of the round. Once started, it cannot be stopped until you run out of spins. You will get 5 additional spins if three or more Scatters land anywhere on the reels during free spins.

Max Win

The maximum win in Piggy Thief online slot is 1,001x your bet. If you are playing the maximum $50, you can walk away with $50,050. Punters can win the local jackpot in one of two ways. The first way to win the Grand jackpot is to cover the entire grid with the Safe icon in the Bank Robbery round. The other way is to get at least 6 Safe icons merged together in the Bank Robbery round. The large safe will unlock at the end of the round to reveal a prize, which can be the Major, Minor or Mini Jackpot.

RTP and Volatility of Piggy Thief Game

Two crucial features to consider when choosing a slot are the RTP and volatility. RTP, or return to player, is a term that theoretically tells you how much of the bets placed on the machine will be returned to players as winnings over time. Piggy Thief has an RTP of 97% which means that if $100 bet is played on the machine, it will return $97 as winnings to players over time, while $3 is retained as house edge. In the slot world, an RTP above 96 is considered high.

In terms of volatility, Vegas-style reel games are categorized into low, medium or high volatility. Each of the categories describes how often players should expect the game to hit and the potential size of each payout. In the medium category, punters should expect a balance between hit frequency and win size, unlike in high volatility slots, where there are fewer frequent big wins. These two factors make the Piggy Thief slot by Onlyplay the perfect entry for all types of gamblers, from the newbies to the high rollers.

Conclusion About Piggy Thief Game

Reviews will hardly do justice to this new slot because there is so much to talk about and little space to do so. That’s why every punter is encouraged to experience this game in their leisure time. Thankfully, you can play the Piggy Thief slot free on FreeSlots99, even without registration. That means you can enjoy this title and savor its cool animations risk-free. You can decide to commit to it with real money when you are sure it ticks all your craving checkboxes—and we bet it will.

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Rating by: Nashon Khamala