RubyPlay

Bull Fever

RubyPlay bullring slot combining linked Respins and Free Spins

SlotRanker Score

/ 99

05099

The SlotRanker Score is calculated from the visible data below. It is not affected by affiliate deals, and it cannot be bought.

How this score is built

RTP

96.88%

return to player

Volatility

High volatility

variance

Max win

4,000×

top multiplier

Min bet

$0.50

per spin

Reels

243 lines

Player rating

4.4 ★

2 votes

DEMO Play free, no signup

RubyPlay

Embed on your site

4.4 / 5

2 ratings

User ratings are shown separately from the Slot Score unless stated otherwise.

Five weighted signals shape the composite. Four context signals refine ties. See how we rate for the full methodology.

Payouts & RTP9/10

RTP 96.88% → 9.0/10

Volatility9/10

high → 9.0/10

Win Potential7.2/10

x4000.00 (4000×) → 7.2/10

Features10/10

11 features → 10.0/10

Game Mechanics8.5/10

f=11 r=5 p=243 → 8.5/10

Context signals (tie-breakers)

Layout6/10

5x3 → 6.0/10

Bet Flexibility6/10

0.5–500 (×1000) → 6.0/10

Provider Reputation6.9/10

provider avg 6.9 → 6.9/10

Popularity3.6/10

search demand p30 + proxy blend (70/30) → 3.6/10

Popularity blends real player search demand (~30 markets) with a catalogue-derived proxy; games without measurable search demand use the proxy alone. Not live play telemetry.

Cite this score

SlotRanker Score: 77 — Bull Fever by RubyPlay

https://slotranker.com/rubyplay/bull-fever#score

How to cite

Slot Summary

Linking cape prizes across a row gives Bull Fever its clearest mechanical hook, with each adjacent addition increasing the held value and resetting the Respins. RubyPlay combines that Hold and Win sequence with 243 Ways, Free Spins, a separate Bonus Game, High volatility, a 96.88% RTP, and an x4000 ceiling inside a bullring festival setting.

How It Plays

Base play uses 243 Ways across 5 reels, but the key change occurs when cape prizes connect horizontally and shift the round into held Respins.

New adjacent capes join the existing set, raise its collected value, and restore the Respin counter, creating a clear objective of extending the linked area.

Theme & Atmosphere

A Bull and Festival theme places the action inside a ceremonial arena, where the animal and its human challenger define the central conflict.

The presentation treats the crowd and spectacle as part of the setting, while cape imagery gives the feature sequence a direct thematic connection.

Festival Animals Bull

Features & Win Potential

Hold and Win begins when at least 3 qualifying prize symbols connect on the same row, awarding Respins that refresh as adjacent symbols arrive.

Filling the available positions advances to the Bonus Game, while Wild Symbol appearances can provide another route into a separate prize selection.

High volatility Free Spins Scatter Symbol Wild Symbol Respins 5 Reels Bonus Game 243 Ways 96% RTP Bonus symbols Hold and Win

Bonus & Free Spins

Free Spins begin when 3 Bull symbols land on the middle reels, moving play away from the linked cape sequence into its own feature round.

During Free Spins, Wild Symbols gain a larger role in forming payouts, separating this bonus from the Hold and Win focus of the base game.

Spec sheet

Bull Fever at a glance.

Identity

Slot nameBull Fever

StudioRubyPlay

Released5/25/2021

Math

SlotRanker Score77

RTP96.88%

VolatilityHigh volatility

Max win4,000×

Bet range$0.50 – $500.00

Player rating4.4 / 5 · 2 votes

Format

Reels5

Paylines243

Layout5x3

Features

Themes

This game is searched most in Argentina, Australia, and Brazil.

Expected average based on this slot's 96.88% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$6.24

Cost per session$6.24

Estimate only, for entertainment purposes — treat gambling as entertainment, not a way to make money, and set a budget you can afford to lose.

How long could a bankroll last on Bull Fever? We simulate thousands of sessions from this game's published RTP and volatility — the long-run math, not a prediction of your next spin.

Bankroll ($)Bet per spin ($)Speed

Volatility tier: High

Running simulation…

How this works

Each simulated spin either misses or returns a win drawn from a log-normal distribution, with the hit rate and spread set by the slot's volatility tier (High). The model is calibrated so the average return equals this slot's published RTP (96.88%), with wins capped at its top multiplier (4,000×).

This is a simplified, parametric model of the game's math — not its real paytable. It exists to make the house edge visible over many sessions, so the numbers above are averages across thousands of runs, never a forecast of one.

This is math, not a prediction. Real sessions vary wildly, and no strategy changes a game's built-in house edge. Play for fun, set limits, and never bet more than you can afford to lose.

Where to play Bull Fever

No matching casinos for your region yet

Casino availability depends on where you play from. We only show casinos that accept players from your country.

Compare Bull Fever with other games

	Bull Fever Score 77This game	La Fiesta Score 83	Wild Toro Score 77	Los Toros Score 76	Spinata Grande Score 73
Identity
Studio	RubyPlay	Relax Gaming	ELK Studios	Popok Gaming	NetEnt
Released	5/25/2021	8/5/2020	11/2/2016	10/18/2022	3/23/2015
Math
RTP	96.88%	96.55%	96.4%	95.93%	96.84%
Volatility	High volatility	High volatility	High volatility	High volatility	Medium volatility
Max win	4,000×	14,778×	2,250×	2,093×	—
Format
Reels	5	5	5	5	5
Layout	5x3	5x4	5x4	5x3	5x4
Paylines	243	40	178	243	40
Min bet	0.5	0.1	0.2	—	0.2
Max bet	500	100	100	—	200
Features
Progressive	—	—	—	✓	—
Wild symbol	✓	✓	✓	✓	✓
Free spins	✓	✓	✓	✓	✓
Scatter symbol	✓	✓	—	✓	✓
Multiplier	—	✓	—	—	—
Bonus game	✓	✓	✓	✓	✓
Respins	✓	✓	✓	✓	—

Every number is shown as a delta against Bull Fever.

Comparing against

Bull Fever

RubyPlay

RTP

96.88%

Max win

4,000×

Score

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