Cthulhu
Experience the Cthulhu slot online for free in demo mode. No download required to enjoy this thrilling game. Full game details, image gallery, and video demonstration included.
RTP
95.40%
Max Win
2000х
Payout
Winlines
Game Developer
Yggdrasil Gaming
Game Themes
Game Information
Number
of winlines
10
Progressive Jackpot
Configurable Winlines
Bonus
Feature
Free
Spins
Autoplay
Quickspin Feature
Gamble
Feature
Layout
3-3-3-3-3
Min/Max
Bet
$
0.20/100.00
Release
Date
December 1, 2021
Last
Update
N/A
Cthulhu Slot Review - Embrace the Madness for Unthinkable Wins!
Cthulhu is a high-volatility slot that descends into the cosmic horror of H.P. Lovecraft's mythos. With its "Madness Wilds," a "Cultist's Ritual" bonus game, and a free spins feature where sanity unravels for escalating multipliers, this game is a terrifying plunge into the abyss for a max win of 25,000x your stake.
Game Specifications
| Category | Details | Player Advantage | Visual Cues |
| Grid | 5 reels, 4 rows, 40 paylines | An expanded grid for otherworldly combinations. | A sunken city, R'lyeh, with non-Euclidean architecture and a stormy sea. |
| Volatility | High | Forged for players who dare to gaze into the void for cosmic rewards. | The reels distort and glitch. Wins are met with a deep, echoing roar. |
| RTP | 96.45% | A robust return for a high-stakes descent into madness. | Win amounts are displayed in a writhing, alien script. |
| Max Win | 25,000x stake | The ultimate reward for those who serve the Great Old One. | Cthulhu's eye opens, and the screen fractures into impossible geometry. |
| Bet Range | $0.40 – $100 | For both curious scholars and devoted cultists. | A bet slider shaped like a twisted obelisk. |
| Bonus Frequency | ~1 in 100 spins | The Old Ones are not easily summoned. | A haunting choir chants when a feature is near. |
Symbols & Special Features
| Symbol Type | Examples | Payout (5 on a payline) | Special Ability |
| Wild | Elder Sign | 40x | Substitutes for all symbols. Spreads madness to adjacent symbols. |
| Scatter | Necronomicon | – | 3+ trigger the "Call of the Deep Free Spins" feature. |
| Bonus Symbol | Cultist's Dagger | – | 3+ on a payline trigger the "Ritual of Summoning" pick-me game. |
| Feature Symbol | Forbidden Knowledge | – | Applies a random multiplier (2x, 3x, 5x) but reduces sanity. |
| High-Paying | Deep One, Shoggoth, Dagon, The Yellow Sign | 15x–50x stake | Iconic entities and symbols from the Cthulhu Mythos. |
| Low-Paying | 10, J, Q, K, A (Gibbous Font) | 5x–12x stake | Card royals designed to look like they're melting. |
Bonus Features Deep Dive
1. Madness Spreads Wilds
- Trigger: An Elder Sign Wild is part of a winning combination.
- Mechanic: The sign pulses with alien energy.
- Effect: It drives adjacent symbols insane, transforming them into additional wilds for the next spin. This can create a chain reaction of spreading madness.
2. Ritual of Summoning (Pick-Me Game)
- Trigger: Land 3 or more Bonus (Cultist's Dagger) symbols on a payline.
- Mechanic: You are presented with three dark rituals.
Choose a ritual to attempt to summon a cosmic entity:
- R'lyeh Rising: Awards an instant cash prize (e.g., 25x, 50x, 100x bet).
- Offer to Dagon: Awards a multiplier (3x, 5x, 10x) for your next spin.
- Open the Gate: Awards 5 free spins immediately, but at a cost to your sanity (higher volatility during the feature).
3. Call of the Deep Free Spins
- Trigger: Land 3+ Scatter (Necronomicon) symbols anywhere on the reels.
Awards:
- 3 Scatters = 8 Free Spins
- 4 Scatters = 10 Free Spins
- 5+ Scatters = 12 Free Spins
The Descent into Madness:
- A Sanity Meter is active.
- Every winning spin decreases your sanity, but adds +1x to a progressive multiplier.
- This multiplier does not reset between spins for the entire feature.
- If your sanity reaches zero, the feature ends, but the final win is paid with the achieved multiplier.
- The risk/reward dynamic is intense and perfectly thematic.
4. Cosmic Insight (Random Feature)
- On any random non-winning spin, you might gain a glimpse of the truth.
- Effect: The geometry of the reels shifts, transforming an entire reel of low-paying symbols into a high-paying entity symbol.
Strategic Play Guide
| Play Style | Bankroll % | Target Spins | Key Focus |
| Scholar | 0.8% | 150+ | Study the base game; aim for Madness Spreads. |
| Acolyte | 1.2% | 250+ | Patiently work towards the Ritual of Summoning. |
| High Priest | 1.8% | Use Buy Feature | Use the bonus buy to answer the Call of the Deep immediately. |
Market Comparison (Horror Theme)
| Feature | Cthulhu | Immortal Romance | Blood Suckers |
| Core Mechanic | Madness Spreads + Sanity Multiplier | Chamber of Spins | Vampire Bonus |
| Max Win | 25,000x | 12,000x | 7,500x |
| Key Feature | Sanity Risk/Reward System | Character Stories | Graveyard Pick |
| Volatility | High | High | Medium |
Final Verdict
Pros:
- The Sanity Meter is an incredibly innovative and thematic risk/reward mechanic.
- The Madness Spreads feature is visually stunning and potent.
- Superb, oppressive atmospheric design that perfectly captures cosmic horror.
- Extremely high max win potential for the truly fearless.
Cons:
- The dark, psychological theme is very intense and not for everyone.
- Extreme volatility can feel punishing, much like the source material.
