Jack and the Mystery Monsters

by SYNOT Games

Enter an old magical forest to uncover the mysterious monsters hidden amongst the trees. Thankfully, these monsters happen to be friendly and want to help you discover the hidden gems of the forest.

Developed by SYNOT Games, Jack and the Mystery Monsters plays on 5-reels with 15 paylines in this medium volatility slot. During your adventure with Jack, you'll uncover Free Spins, Bonus Games and Wilds with multipliers to unlock amazing treasures in the forest.

Slot information

RTP: 96.20%
Volatility: Medium
Max Payout: 2,500x stake
Reels: 5
Paylines: 15
Jackpot: No
Min Bet: 0.40
Max Bet: 100.00
Themes: Adventure, Halloween, Mythical
Release Date: 1st Jun 2021

Our rating

“ A whimsical adventure that has magnificent features ”

3.8 out of 5

Win potential

Play Jack and the Mystery Monsters

Jump straight into the action and play Jack and the Mystery Monsters now at the following fully licenced UK slot sites. These slot sites have been thoroughly audited and reviewed by the team here at Slot Gods to ensure they offer an exceptional user experience, are trustworthy, safe, secure, and boast the best selection of online slots in their portfolio including Jack and the Mystery Monsters...

Jack and the Mystery Monsters Screenshots

Jack and the Mystery Monsters Features

Like most online slots, you can trigger the Free Spins round by landing 3 free spins symbols on reels 1 to 3. You'll trigger 10 free spins during this round and have a multiplier that starts at x1 that increases for every wild on the reels. As previously mentioned, the wild symbol acts as a multiplier with wins substituting wild symbols multiplied by x2.

There's an additional feature that can be triggered by landing 3 bonus symbols on reels 3 to 5 which trigger the Bonus Games. This takes you to 2 locations with the first one giving you the option to select 1 of 5 items to reveal a prize and the second giving you the chance to add a multiplier.

Jack and the Mystery Monsters - Free Spins

Free Spins

Managing to land 3 free spin symbols on reels 1 to 3 will trigger 10 free spins with a multiplier starting at x1. Free spins cannot be retriggered but the multiplier increases for every wild.

Jack and the Mystery Monsters - Bonus Games

Bonus Games

Similarly, if you manage to land 3 bonus symbols on reels 3 to 5, then the Bonus Game will be triggered. There are 2 different sections, one with a prize and another with a multiplier.

Play now

Jack and the Mystery Monsters

It's time to join Jack on a supernatural adventure into a strange forest. Unsurprisingly, there are a bunch of adorable monsters in the woods, but they are completely harmless - in fact, they want to help you uncover all the hidden treasure in the woods.

Developed by SYNOT Games, Jack and the Mystery Monsters plays on 5-reels with 15 paylines in this Halloween inspired slot. Go on a journey with Jack to discover Free Spins, Bonus Games and wilds with multipliers in Jack and the Mystery Monsters.


As the slot opens up, the background is a wonderous forest filled with bright lights and stunning trees. In the distance, there are various eyes that light up in the distance but they are the furthest thing from creepy. All the monsters on the reels look cuddly and absolutely, so it's hard not to love them. Similarly with the other symbols as they are designed with a cute art style that fits in with the background.

Perhaps, the coolest bit about this slot is Jack moving to the Bonus Game with the different backgrounds which takes you on a whole new adventure. It's tastefully done from SYNOT Games and is definitely appreciated.

The music is absolutely whimsical with woodwind instruments mixed with drums to add something magical to the slot. This alongside the ambient noises such as crickets chirping and soft noises from the monsters makes it wonderful to hear.


It's literally as simple as it gets with only a few exciting features to keep you entertained. As previously mentioned, this slot plays on 5-reels with 15 paylines so there's not too much to follow.

All the relevant buttons can be found at the bottom with the spin button, bet level and autospin button at the bottom right. Further to the left, there's an additional button that includes the paytable and anything else you might need throughout your playthrough.

Win Potential

The RTP of Jack and the Mystery Monsters is at a decent amount with 96.20% which is over the average standard. In terms of the volatility level, this slot has a medium level essentially meaning that you'll receive smaller but more frequent payouts than high volatility slots.

Sadly, the maximum win for this slot is a mediocre 2,500x your stake which can be achieved through the multipliers. However, you can bet the maximum amount of 100.00 to gain some amazing wins throughout, but that's the only way to win a decent amount.

Our Verdict

Jack and the Mystery Monsters is actually quite charming in terms of design and gameplay - the developers have definitely created a unique world that you can't help but love. Sadly, the win potential doesn't match with a low maximum win of 1113.50x your stake, but that doesn't make this a bad slot.

Thankfully it has a medium volatility level, so wins will be a lot more frequently compared to high-volatility gameplay. If you love quirky little slots based around whimsical monsters, then Jack and the Mystery Monsters is the slot for you.

Charlie Vogelsang
Reviewed by Charlie Vogelsang Last updated on

As the Content Manager at Slot Gods, Charlie is focused on staying on top of the latest slot releases as well as finding the most recent trends. She spends her day searching for the best slots to be reviewed as well as managing most of the content that you will find on the site. Whether it’s the latest slot review from Relax Gaming or a guide on a brand-new mechanic, Charlie will be sure to have it covered on Slot Gods.

Learn more about Charlie here

Play Jack and the Mystery Monsters

Play Jack and the Mystery Monsters now at the following verified UK slots sites. These slot sites are fully licenced and have been thoroughly vetted and reviewed by us to ensure they offer a great user experience, are trustworthy, secure, and have a wide variety of the best online slots in their lobbies including Jack and the Mystery Monsters:-

Slots you may also like...

Enjoyed Jack and the Mystery Monsters? Here's a handful of similar slots we think you'll like too. These online slots have been chosen based on features and themes similar to Jack and the Mystery Monsters. You might also want to check out other SYNOT Games slots.