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Endorphina · Slot Review

Taboo — Full Review & Free Demo

3.8/5
Play for Real →
RTP
96.00%
Volatility
Low
Max Win
2,500x
Provider
Reels
5
Paylines
1 - 25
Bet Range ($,€,£)
0.01 - 250
Rating
3.8/5
Released
Feb 2018

Taboo overview

Taboo is a 5x3, 25-line video slot from Endorphina with an adult theme and a bonus structure built around a wheel feature plus a gated pick game. From a math perspective, the first thing I notice is the RTP setting of 93.77% in the core data, which is well below the level many players expect. The layout is standard, the mechanics are not.

Review sources agree on the core profile: fixed lines, medium-high risk in the official data, and a two-step feature path through Triskele Wheel into Red Room. One source also reports expanding wilds on the middle reels, which fits the base-game design. I am not entirely sold on the theme, and the base game can drag a bit if the bonuses stay locked.

Main symbols

25 fixed lines mean symbol value matters more than reel expansion or ways mechanics. Looking at the paytable structure, the top symbol is the girl and 5 of a kind pay 400x the base bet. The Scatter is the high-heeled shoe, and 5 Scatters pay 50x. That gap tells you where most of the base-game value sits, top-line combinations rather than scatter pay alone.

Wild is a leather cushion that substitutes for all symbols except Bonus, and the official description says it can complete combinations with Scatter. A review source adds that it expands to fill entire columns on the middle reels, which is meaningful because a full-reel wild on reels 2, 3, or 4 raises line coverage sharply. The numbers tell you this is the main base-game accelerator.

Symbol Payouts

icon 1
5x400
4x8
3x1
2x0.08
icon 2
Scatter
5x50
4x10
3x2
icon 3
5x40
4x4
3x0.8
icon 4
5x30
4x4
3x0.8
icon 5
5x20
4x4
3x0.8
icon 6
5x4
4x0.8
3x0.4
icon 7
5x4
4x0.4
3x0.2
icon 8
5x4
4x0.4
3x0.2
icon 9
5x4
4x0.4
3x0.2
icon 10
5x4
4x0.4
3x0.2
icon 11
Wild
icon 12
Scatter

Bonus features

Bonuses are where Taboo does its real work. The headline feature is Triskele Wheel. Officially, 3 or more Scatters trigger it, while review sources describe 3 Bonus symbols on reels 3, 4 and 5. What is consistent is the outcome set, multipliers up to 25x total bet, and up to three attempts to improve the result.

Red Room sits behind that wheel and only opens through it. This is a five-level pick-and-win feature where you choose from items, collect prizes, and stop when a NO or STOP result appears. From a math perspective, that gating matters, because feature frequency is effectively split into two layers: first access the wheel, then find the BONUS sector.

Risk Game adds post-win variance rather than underlying EV. After any base win, you can pick one of four face-down cards against the dealer and double the payout up to 10 times. One loss wipes that gamble chain. Bonus Pop is also listed, but availability can depend on jurisdiction, and no fixed feature cost is confirmed in the sources.

Bonus Buy Options

Bonus Buy Triskele Wheel
Triskele Wheel
Triggered by 3 or more scatter symbols according to one source, or by 3 bonus symbols on reels 3, 4 and 5 according to review sources. The wheel has multipliers up to 25x and can grant up to three attempts.
Bonus Buy Red Room
Red Room
A five-level pick bonus accessed through the Triskele Wheel. You choose items for cash prizes until a NO or STOP result ends the current run.
Bonus Buy Risk Game
Risk Game
Available after a base game win. Pick one of four cards to beat the dealer and double the win, with up to 10 attempts.
Bonus Buy Bonus Pop
Bonus Pop
An optional feature mentioned as jurisdiction-dependent. Review sources describe it as a way to activate the Triskele Wheel and Red Room bonuses.

RTP and volatility

93.77% is the official RTP figure, and that is the number I would anchor to. Review sites mention broader ranges up to 96.10%, which suggests operator-selectable settings, but the lower setting is the verified one here. From a math perspective, that reduces long-run return materially. Over 10,000 spins, the expected loss gap versus a 96% model is not trivial.

Volatility is less clean across sources. The official data says medium-high, while one review calls it low. I would side with medium-high because the structure supports it: a 400x top symbol, expanding wild potential, a wheel with capped 25x outcomes, and a gated second bonus. Hit frequency is not stated, but the distribution likely leans on moderate base hits with occasional feature spikes rather than constant churn.

💬 What Players Say
Review coverage is split on the maths. The bonus structure gets the most praise, while the low 93.77% setting and niche theme are the main objections. Based on 4 reviews.
Ryan Cole’s Verdict

Final verdict

Taboo has a clean mechanical identity. I see a standard 5x3 shell, then a layered bonus path that makes the game more technical than it first appears. The two-stage route from Triskele Wheel to Red Room is the best part of the design, and the expanding wild angle gives the base game some needed lift.

My main reservation is simple, the official 93.77% RTP changes the value proposition. The numbers tell you that even a decent feature stack cannot fully offset a weak return setting. If you want unusual structure and can tolerate a niche theme, it has merit. If RTP is your first filter, this one is hard to back strongly.
3.8
★★★★☆
out of 5
✓ Pros
Distinct two-stage bonus structure
Expanding wilds on middle reels
Top symbol pays 400x
Risk Game can double wins
Mobile play is supported
✗ Cons
RTP can be as low as 93.77%
Bonus access is highly conditional
Theme will divide players
No clear free spins round
Ryan Cole
Ryan Cole
Lead Casino Slots Analyst
5+ years analysing online slots for the UK market. Every game is played for a minimum of 500 demo spins before publication. No affiliate bias — ever.
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Taboo FAQ
How is the Triskele Wheel triggered in Taboo?
Officially, 3 or more Scatters trigger the wheel. Review sources also describe 3 Bonus symbols on reels 3, 4 and 5, so the trigger wording varies across sources, but the wheel feature itself is consistent.
What can the Triskele Wheel pay?
The wheel includes bet multipliers up to 25x and gives up to three attempts to improve the result. Some sectors can also open access to the Red Room feature instead of ending on a cash multiplier.
How does the Red Room bonus work?
It is a five-level pick game reached only through the wheel bonus. You choose themed items for prizes, and the round ends when you hit a NO or STOP result, or when all levels are completed.
Does Taboo have free spins or a bonus buy?
The sources do not clearly confirm a standard free spins round. Bonus Pop is mentioned as a feature that can activate bonus content, but no fixed buy price is provided.
What is the maximum win and what drives it?
One review lists the maximum win at 3600x, while another mentions 2500x. The higher cited ceiling pairs with expanding wilds, the 400x top symbol, wheel multipliers, and access to the gated pick bonus.