4 Horsemen Slots Series

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Published on 28.10.2025. Last updated on 30.10.2025

4 Horsemen are one of the most visually pleasing slots I’ve encountered in the Spinomenal collection. Dark aesthetics with hell-inspired motifs, inconspicuous animations and high-quality design of symbols make this series one of my favourites. Currently, it comprises four video slots: 4 Horsemen (three editions – I, II and III) and Book of 4 Horsemen. I cannot say the games are brilliant or unique, but I was definitely touched by the visual side. Bonus features in these Spinomenal slots are also good.

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Best online casinos with 4 Horsemen slots

  • Ybets casino square logo
    Ybets
    8.5/ 10
    500% bonus + 400 free spins

Key features of the 4 Horsemen series

Parameter 4 Horsemen – Hold & Hit 4 Horsemen III Book of 4 Horsemen 4 Horsemen II
RTP (max) 96.85% 95.74% 96.14% 96.01%
Format 5×3 5×4 5×3 4x3x3x3x4
Bets $0.25-$250 $0.5-$500 $0.1-$100 $0.2-$200
Lines 25 50 10 20
Bonus features Hold & Hit, free spins, Colossus symbols FS, multipliers, stacked/expanding wilds, extra wilds, moving reels respins, Shifting Reels FS, Expanding symbols FS, Colossus symbols, FS Gamble, Pays Both Ways, Mystery symbols

4 Horsemen III and II are packed with features. Moreover, the second edition has a rare Both Ways Wins approach where combinations are counted in both directions: left to right (like 99% of other slots) and in reverse.

4 Horsemen – Hold & Hit has a bonus game with respins, in which you can win a Mini, Major, Mega or Grand jackpot. Many Spinomenal slots come with this jackpot addition, e.g. Gorilla Fury – Hold & Hit. Moreover, the video slot has the highest RTP of all the four, 96.85%.

Book of 4 Horsemen has the most basic bonus package, as you can see in the table above. It offers a Scatter Wild (x250 total bet for five) and a 10-FS bonus with an expanding symbol picked randomly before the feature starts.

Test video with 4 Horsemen II slot

Key findings after 200 spins in 4 Horsemen II

Initial Balance Final Balance Number of Spins Bet Size Total Money Bet Win/Loss Bonuses Provider's RTP Actual RTP
5000.00 5010.85 200 0.20 40.00 10.85 0 96.01% 127.13%

Even if my session were non-profitable, which is not, I would still call this game one of the most exciting in the Spinometal collection. Along with its excellent artistic style, which I find detailed and appealing, though a bit scary, 4 Horsemen II has three rare features. Well, when I say ‘rare’, I mean they aren’t typical for the provider’s collection:

  • A 4x3x3x3x4 field. Colossus Fruits, with a similar mechanic, has a mirroring format: 3x4x4x4x3.
  • Pay Both Ways. The slot has 20 lines, but this model actually doubles the potential of the lines.
  • Big Mystery Symbols. Well, mystery icons are a frequently used feature in video slots. But I’ve seldom met this feature applied to a big 3×3 symbol. Its implementation in 4 Horsemen II is interesting: When the reels stop after a spin, the three central reels can be occupied by a giant mystery symbol, including a high-paying one. This can result in hefty winnings. Watch my video: The feature helped me win x12 at 5m 50s and x20 at 6m 12s.

Gamble free spins in 4 Horsemen II

Free spins gamble in 4 Horsemen II

This is also a rarity in video slots. You may collect the default 10 free spins after landing three scatters on the reels, or gamble this number and get 15 if you win or 5 if you lose. The Gamble has four levels, enabling you to hit 50 free spins at best.

My conclusion

4 Horsemen is one of the most entertaining and atmospheric Spinomenal slot series I’ve reviewed here. The slots have several bonuses that are pretty rare to find anywhere else, e.g. a 3×3 Mystery Icon that morphs into another pic. All games are of medium volatility, I think so (there is no official info).

Vitalii Fesenko is an experienced casino analyst with over ten years of expertise in reviewing online slots, specializing in Spinomenal games. Leveraging a meticulous approach to data verification, he delivers in-depth insights on RTPs and player experiences to empower informed gaming decisions.
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