Beast Below
By Hacksaw Gaming
Beast Below is a high variance horror slot from Hacksaw Gaming, available at UK slot sites from June 2023. It has 14 paylines and 5 reels. The game uses expanding Siren Wilds with multipliers of up to 200x to help drive wins in the base game. There are also two bonus rounds with more expanding multiplier wilds that move across the reels or up the rows with each spin. The top payout is 10,000x.
| Game Name | Beast Below |
|---|---|
| Developer | Hacksaw Gaming |
| Theme(s) | Fishing, Horror |
| Release Date | June 2023 |
| Rows | 4 |
| Reels | 5 |
| Paylines | 14 |
| Volatility | High |
| RTP Rate | 96.29%, 94.27%, 92.25%, 88.28%% |
| Max Win | 10,000x |
| Min Bet | £0.10 |
| Format | 5-Reel |
Play Beast Below For Real At These Slot Sites
Review Scorecard
What Our Reviewer Says …
A beguiling high variance slot stacked with expanding wild multipliers and a thrilling bonus round
What We Like
- Spooky them with top class artwork
- Expanding wilds with to 200x mutlipliers
- Two free spins rounds to unlock
- Siren Wilds land regularly in base game
What We Didn't Like
- Didn't unlock free spins in 200 plays
- Very tough maths model
Theme and Design
Beast Below showcases Hacksaw Gaming’s creative skills. This is a great-looking slot with tons of atmosphere and a suitably creepy soundtrack. It’s set in a rocky cove at night, a lonely fishing boat bobbing on the waves, seemingly overrun by a Kraken-type monster. Beneath the surface the murky waters house our reel set, a few fish swim by, air bubbles rise and strands of seaweed float upwards. It feels eerie, like the end of a horror movie where the heroes have all met their fate. Or maybe it’s the beginning. Whatever, the big question is … just what is lurking out there beyond the reels?
In short, if you enjoyed the style of Hacksaw games like Rotten and Cursed Seas then you’ll enjoy this too.
RTP and Variance
Beast Below has four available RTP settings: 96.29%, 94.27%, 92.25%, 88.28%. It is up to your casino operator to choose which setting to run the game at. The top setting of 96.29% is good, just above average for the UK but you won’t always be playing at this level. We verified the RTP at five popular casinos to find out which setting they run the game at. This is what we found:
- Casumo (independent): 94.27%
- BacanaPlay (Skill on Net): 92.25%
- Barz (White Hat Gaming): 94.27%
- All British Casino (L and L Europe): 92.25%
- MrQ (independent): 96.29%
Our research shows that MrQ offers the best value for your wagering on Beast Below. If RTP is an important consideration for you then we recommend that you play there.
Beast Below is also a high variance slot, which is no surprise from Hacksaw Gaming who have a long list of volatile games in their catalogue. So if you enjoy chasing down those big wins and don’t mind sitting through some frustrating spells whilst you do … this is one for you.
Maximum Win
The maximum win on Beast Below is 10,000x. Again, this is average for a Hacksaw Gaming high variance slot. There are a few with higher top payouts if you are looking for better potential. We recommend RIP City, Cursed Seas and Wanted Dead or a Wild which are all capped at 12,500x and worth a spin.
Symbols and Paytable
Beast Below is a 14 payline slot with 5 reels and 4 rows. To trigger a win you will need to land 3 or more identical symbols across the reels from left to right, starting at the far left.
Symbol values in the game are not huge, but again, we are in Hacksaw Gaming territory here so you can be sure that there will be plenty of high value multipliers to help boost your wins when they do arrive.

Low value symbols are the cards, 10 through to Ace. They are valued at from 0.1x for 3 10s up to 3x for 5 Aces. The premiums are the deep-sea fish – spikey and weird looking things. They are valued at from 0.5x for 3 spikey bloaters up to 10x for 5 of the deep sea fish with headlamps!
There is also an Anchor Wild in this game that will substitute in for all other symbols to form winlines. It also pays out a nice 20x for 5 on a line.
Features and Gameplay
As always with Hacksaw Gaming slots, Beast Below is not overladen with features, but the ones it has are top quality. In this case, expanding wilds are key, and as always, they bring with them plenty of multiplier action.
Expanding Siren Wilds
First up are the Siren Wilds. Sirens can land at any time. When they do, if by expanding upwards they would form part of a winning combination, then they expand from their position to the top of the row. These Sirens also come with multipliers of 2x, 3x, 4x, 5x, 6x, 7x, 8x, 9x, 10x, 15x, 20x, 25x, 50x, 100x or 200x.
More than one Expanding Siren Wild can appear on the reels at once, and if they both form part of a winline, their multipliers are added before being applied to the win.
Two Free Spins Rounds
There are also two free spins rounds in Beast Below. Look out for the FS Scatter Beast Below game logo which is required to unlock these.
Siren’s Call Bonus Round
Three scatters opens up the Siren’s Call Bonus Round with 10 free spins. Now, there is more chance of landing the original Expanding Siren Wilds, and a second Pink Siren comes into play. These also expand AND they remain on their reel, nudging upwards one row with each subsequent spin until they disappear off the top of the reels.
Pink Sirens also have multiplier values of 2x, 3x, 4x, 5x, 6x, 7x, 8x, 9x, 10x, 15x, 20x, 25x, 50x, 100x or 200x.
Siren’s Call spins can be extended by landing 2 scatters to get 2 more spins or 3 scatters to get 4 more spins.
Down Below Bonus Round
Four scatters triggers the Down Below Bonus Round with a Diver symbol which is another clever variation on the expanding wild. This one expands to full reel height and comes with 3 Oxygen Charges. At the start of each spin the Diver will move one reel to right or left, consuming one Oxygen Charge as he does and updating his multiplier value too.
Diver multiplier values are 2x, 3x, 4x, 5x, 6x, 7x, 8x, 9x, 10x, 15x, 20x, 25x, 50x, 100x or 200x.
And once their Oxygen Charge reaches zero, then they are removed from the reels.
You can have up to 3 Divers on the reels at once, their multiplier values added together when they combine across a winline.
This round can also be extended by landing 2 scatters to get 2 more spins or 3 scatters to get 4 more spins.
Final Verdict
Beast Below is a truly beguiling slot from Hacksaw. Despite its ruthless behaviour during testing, with long runs of little return, it never got boring. Instead, it continued to intrigue and lure us in, just like the Sirens. Questions linger around what exactly that little boat is doing bobbing up and down on the waves, and what does lurk down there beneath? The genius part is, you can only truly find out by unlocking that final bonus round. It’s like a role play adventure game that you just have to complete. And when you do unlock that Down Below bonus, you see the Deep Sea Diver dropping to the ocean floor to help you gather coins whilst the looming Kraken monster looks over, waiting to strike, it’s like the narrative finally makes sense. It’s all about great treasures guarded by a classic monster, of course.
Storyline aside, the features here are fun too. We’ve seen similar before from Hacksaw. The expanding wild multipliers are a bit like the Cursed Chests that expand upwards with multipliers in Cursed Seas. But the highlight, and most original part of this game, is the Diver Wild whose Oxygen supply keeps him on the reels for 3 spins. The jeopardy here is intense particularly when they carry high value multipliers as you’ll want to keep the Diver going as long as possible. And of course, it’s all beautifully woven into that narrative.
To conclude then, this is another very enjoyable slot with an intriguing storyline from a developer at the top of their game.
Testing Notes
For the purposes of this review I tested Beast Below at Casumo with 200 spins. Here is my session by the numbers:
- Spins: 200
- Stake Size: 10p
- Start balance: £25.19
- End balance: £11
- Biggest Win (excluding bonus rounds): 18x
- Free Spins rounds: 0
- Longest streak with no wins: 22 spins
- Session Time: 18mins 56 seconds
This was a brutal introduction to Beast Below but not untypical of a high variance slot. With a single biggest win of just 18x there were no major highlights. The expanding Siren did show up on fairly regular basis but only ever to help out with small wins. The FS Scatter was also a regular show on the reels, but never more than two at once during my 200 spins.
To illustrate the bonus round we played for free on the Hacksaw Gaming website and used the Bonus Buy option. Watch the Down Below bonus round in the video.
Who Made Beast Below?
- Name: Hacksaw Gaming
- UK License: 54059
- Total Games: 50 +
- Known For: Dark, high variance output and bonus rounds driven by combining multipliers
- Popular Slots: Hand of Anubis, Itero, Gladiator Legends, Break Bones











