Beast Below (Hacksaw Gaming) Slot Review

Beast Below: Slot Overview
Beast Below is an underwater adventure slot developed by Hacksaw Gaming, released on June 22, 2023. The game immerses players in a deep-sea exploration theme, where a scuba diver descends to the ocean floor in search of treasures guarded by mythical sirens and beasts like the kraken. It features a classic video slot setup with 5 reels, 4 rows, and 14 fixed paylines, appealing to fans of medium-to-high volatility games that blend exploration narratives with high-stakes bonus potential. Targeted at experienced slot players who enjoy thematic depth, multiplier-driven mechanics, and substantial win caps up to 10,000x the bet, Beast Below delivers thrilling base game interactions and two distinct free spins modes, enhanced by bonus buy options for immediate access to features.
Design and Graphics
Beast Below showcases a captivating oceanic aesthetic, with a dark, abyssal backdrop featuring a submerged shipwreck visible in the distance, evoking mystery and danger. The reels are framed against deep blue gradients transitioning to shadowy depths, punctuated by bioluminescent effects and subtle particle animations simulating underwater currents. Symbols are richly detailed: low-paying royals (10, J, Q, K, A) appear as weathered treasures etched in stone, while premium fish icons—including lanternfish, seahorses, and the top-tier anglerfish with its glowing lure—feature realistic textures and fluid swim animations. The anchor Wild gleams with metallic sheen, the kraken Scatter looms menacingly with tentacles, and Siren symbols (turquoise in base game, red in bonuses) possess ethereal, seductive designs with shimmering scales and multiplier badges.

Beast Below slot – base game
Animations are smooth and thematic: winning symbols pulse with light bursts, Expanding Sirens unfurl gracefully upwards, and bonus triggers unleash cascading bubbles and diver descents. The user interface is intuitive, with a control panel at the bottom displaying bet size, win amounts, and feature buttons, optimized for seamless play on desktops, tablets, and mobiles. Sound design complements the visuals with ambient underwater hums, echoing diver breaths, haunting siren calls, and triumphant swells during big wins, creating an immersive, high-production-value experience that rivals top-tier releases from Hacksaw Gaming.
Gameplay Mechanics
Beast Below operates on a 5×4 grid with 14 fixed paylines, where wins form by landing three or more matching symbols on adjacent positions starting from the leftmost reel. Bets range from €0.10 to €100 per spin, accommodating casual and high-roller playstyles. The base game flows dynamically: spins initiate with a dive-like reel roll, and qualifying wins trigger payouts based on symbol combinations.
| Symbol | 3 Matching | 4 Matching | 5 Matching |
|---|---|---|---|
| 10, J | 0.4x | 1x | 2x |
| Q, K | 0.5x | 1.2x | 2.5x |
| A | 0.6x | 1.5x | 3x |
| Fish (low-mid) | 0.8x-1x | 2x-4x | 4x-6x |
| Aanglerfish (premium) | 2x | 5x | 10x |
| Anchor Wild | – | – | 20x |
The anchor Wild substitutes for all symbols except Sirens and kraken Scatter, boosting combinations. Expanding Sirens (turquoise only in base) land limited to one per reel; if part of a win, they expand upwards, reveal a multiplier (2x to 200x in values like 2x, 3x, 4x, 5x, 6x, 7x, 8x, 9x, 10x, 15x, 20x, 25x, 50x, 100x, 200x), and apply it to that win line—multipliers sum if multiple contribute. This mechanic injects volatility, as Sirens heighten base game excitement without respins or tumbles.
Bonus Features
Beast Below’s bonuses elevate the underwater quest, triggered by kraken Scatters. Key modes include two free spins variants and enhanced spins via Bonus Buy.

Beast Below slot – the siren’s call free spins
The Sirens’ Call Bonus Game activates with 3 Scatters, awarding 10 Free Spins; retriggers add 2 spins (2 Scatters) or 4 spins (3 Scatters). Red Siren symbols land fully expanded, stick to the reel, and shift upward by one position per spin, bearing multipliers up to 200x. These apply and sum like base Sirens, persisting for heightened win potential.

Beast Below slot – down below free spins
The premium Down Below Bonus Game (4 Scatters) also grants 10 Free Spins, with identical retriggers. Diver symbols appear as wild multipliers (same 2x-200x range), starting fully expanded with 3 oxygen charges. They remain until charges deplete, randomly relocating to another reel (consuming 1 charge) with a fresh multiplier. Up to 3 Divers can coexist, their multipliers combining for massive payouts.
| Bonus Type | Trigger | Free Spins | Key Mechanic |
|---|---|---|---|
| Sirens’ Call | 3 Scatters | 10 (+2/4 retrigger) | Sticky expanding red Sirens (up to 200x), shift up per spin |
| Down Below | 4 Scatters | 10 (+2/4 retrigger) | Up to 3 expanding Diver wilds (2x-200x), 3 oxygen charges, random moves |
Bonus Buy offers four instant-access options:
| Option | Cost | Effect |
|---|---|---|
| 3x Active (Bonushunt Featurespins) | 3x bet | 5x chance for bonus game |
| 50x Active (Siren Featurespins) | 50x bet | ≥2 Sirens per spin guaranteed |
| 120x (Sirens’ Call) | 120x bet | Sirens’ Call with sticky Sirens |
| 200x (Down Below) | 200x bet | Down Below with expanded Divers |
These features synergize multipliers for explosive potential, with Divers offering the pinnacle through persistence and multiplicity.
Betting Options and Payouts
Betting flexibility spans €0.10 to €100, suiting diverse bankrolls. The default RTP 96.29% is solid, though configurable to 94.27%, 92.25%, or 88.28% by operators—always verify in-game. Mid-High volatility yields infrequent but potent wins, capped at 10,000x (€1,000,000 at max bet). Payouts emphasize premiums and multipliers, with base game hits modest (up to 20x Wilds) but Sirens/Divers scaling dramatically. No hit frequency, bonus frequency, or max win probability disclosed, but mechanics favor bonus chases for peaks.

Beast Below slot – bonus buy
| Parameter | Value |
|---|---|
| Min Bet | €0.10 |
| Max Bet | €100 |
| RTP Options | 96.29% (default), 94.27%, 92.25%, 88.28% |
| Volatility | Mid-High |
| Max Win | 10,000x |
Conclusion
Beast Below excels in its polished underwater visuals, innovative Expanding Sirens and persistent Diver mechanics, and versatile Bonus Buy suite, delivering high engagement through multiplier stacking up to 200x per symbol and dual free spins paths. Strengths include the 10,000x max win potential, mobile optimization, and base game intrigue via Sirens, making it a standout from Hacksaw Gaming. Drawbacks encompass configurable lower RTPs and mid-high volatility’s dry spells between bonuses. Players can test the slot risk-free using the built-in demo available on this page. Overall, it’s a compelling dive for thrill-seekers valuing thematic immersion and scalable payouts in a balanced, feature-rich package.











