Wolf of London Demo Slot
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Wolf of London Slot Review
Written by: Filip Gromovic Reviewed by: Nashon Khamala
Wolf of London slot is an upcoming release from Yggdrasil that places a werewolf hunt inside a Victorian London setting. The game uses 5 reels with a base grid that expands downward when Full Moon symbols land, adding extra rows where Collectible Crystals can appear. Gathering five crystals of one colour triggers a dedicated Collection Free Spins round with a special werewolf symbol injected into the reels.
A separate regular Free Spins round activates when three Full Moon scatter symbols land simultaneously. Yggdrasil has not yet published official RTP, volatility, or maximum win values for this title. The slot is listed as upcoming on demo sites, and its full specifications should appear on the Yggdrasil product page closer to launch.
Below is a breakdown of the mechanics observed in early demo access, covering how the expanding reels work, how the crystal collection system operates, and what to expect from both free spins modes.
How to Play Wolf of London
Wolf of London slot uses a 5-reel grid set against a backdrop of gaslit brick walls, foggy streets, and Victorian-era character portraits. The base grid starts at a standard height and can expand downward when Full Moon symbols land, adding extra rows beneath the regular reel positions.
Here is the step-by-step flow of a typical session:
- Select a bet level using the on-screen controls.
- Press Spin to activate the 5-reel grid.
- Watch for Full Moon symbols. When one lands, the grid expands by adding a row below the base position.
- Collectible Crystals can appear inside the expanded rows. They come in multiple colours: red, blue, purple, and green, each tracked by a separate counter on the side of the screen.
- Collect 5 crystals of one colour to trigger Collection Free Spins for that colour.
- Alternatively, land 3 Full Moon symbols on a single spin to trigger the regular Free Spins round.
The symbol set includes Victorian characters in coloured coats, weapons such as pistols and crossbows, coloured gemstones, and the werewolf figure positioned beside the reels. Regular pay symbols form wins on adjacent reels from left to right.
The expanding-reel mechanic is what separates base-game play from a standard 5-reel slot. Every Full Moon that lands physically changes the grid size, opening new real estate where crystals and additional pay symbols can appear.
Bonus Features: Expanding Reels, Crystal Collection & Free Spins
Wolf of London builds its feature set around two interconnected systems: a reel-expansion mechanic driven by Full Moon symbols and a multi-colour crystal collection that unlocks dedicated free spins rounds.
Expanding Reels via Full Moon
When a Full Moon symbol lands on any reel during the base game, the grid expands by adding one extra row below the existing positions. New symbols drop into the expanded space, including both regular pay symbols and Collectible Crystals. Multiple Full Moons on a single spin can add multiple extra rows, stretching the grid further downward.
The expansion is temporary for that spin and resets on the next. However, any crystals collected during the expanded state are permanently added to their respective counters.
Crystal Collection Mechanic
Four separate crystal counters sit on the side of the screen, one for each colour: red, blue, purple, and green. Collectible Crystals only appear inside expanded rows, meaning a Full Moon must land first before any crystal can be gathered. Each crystal that lands in an expanded position adds one unit to its colour’s counter.
The collection persists across spins within a session. Reaching 5 crystals of a single colour triggers that colour’s Collection Free Spins round.
Collection Free Spins
Once 5 crystals of one colour are collected, the corresponding Collection Free Spins round activates. Based on early demo observations, the red collection awards 5 free spins with a red werewolf symbol added to the reels for the duration of the round.
The addition of a colour-matched werewolf symbol during Collection Free Spins changes the reel composition, potentially increasing high-value landing frequency during the round.
Regular Free Spins
The regular Free Spins round triggers when 3 Full Moon symbols land on the reels during a single spin. This operates independently from the crystal collection system.
Landing 2 Full Moons results in the grid expanding without triggering free spins, which creates near-miss tension common in scatter-based bonus systems. The third Full Moon must land on the same spin, not across multiple expansions.
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Play Wolf of London for Free
Wolf of London is currently listed as an upcoming release on demo slot directories. Once Yggdrasil officially launches the title, a free demo version should appear at casino sites and independent slot databases that carry the Yggdrasil catalogue.
The demo will mirror the real-money version in mechanics and hit frequency, making it the best way to test how the crystal collection system works across an extended session. Since the game is built in HTML5, the demo will run in any modern browser on desktop or mobile without additional software.
Similar Slots Worth Trying
Players interested in Wolf of London’s werewolf theme or collection-based mechanics can explore several related titles from Yggdrasil and other providers.
| Slot | Provider | RTP | Key Similarity |
| Wolf Hunters | Yggdrasil | 96.3% | Werewolf theme, collection mechanics with rage meters, sticky wilds |
| Blood Moon Wilds | Yggdrasil | 96.2% | Full moon trigger, werewolf symbols turn into sticky wilds during free spins |
| Curse of the Werewolf Megaways | Pragmatic Play | 96.5% | Werewolf transformation mechanic, expanding reel area during bonus |
Wolf Hunters is Yggdrasil’s closest existing werewolf title. It uses a 5-reel, 20-payline layout with a rage meter collection system and three types of free spins. The collection mechanic is thematically similar to Wolf of London’s crystal counters, though the execution differs.
Blood Moon Wilds shares the full moon trigger concept. In that game, full moons from a lunar calendar transform high-value symbols into sticky wilds during free spins. Players who enjoy the moon-as-trigger design in Wolf of London will find a similar rhythm in Blood Moon Wilds.
FAQ about Wolf of London
Wolf of London is developed by Yggdrasil, the Swedish-founded iGaming studio known for titles like Vikings Go Berzerk, Raptor DoubleMax, and Wolf Hunters.
The official RTP has not been published by Yggdrasil at the time of writing. This page will be updated with confirmed RTP values once the slot officially launches.
Yes. Wolf of London has two free spins systems. Regular Free Spins trigger when 3 Full Moon symbols land on the same spin. Collection Free Spins trigger when 5 crystals of one colour are gathered through the expanding-reels mechanic.
When a Full Moon symbol lands on the grid, an extra row is added below the base reel positions. New symbols, including Collectible Crystals, drop into this expanded space. Multiple Full Moons on one spin can add multiple rows.
Four colour-coded crystal counters (red, blue, purple, green) track crystals that appear only in expanded rows. Collecting 5 of one colour triggers a Collection Free Spins round with a special werewolf symbol added for that colour.
As of 2026, Wolf of London is listed as upcoming on demo directories. The demo is not yet publicly available. Check back after Yggdrasil's official launch date for free and real-money access.
The slot is set in Victorian London with a werewolf narrative. The backdrop features gaslit windows, foggy brick streets, and character symbols dressed in period-appropriate coats and gear.
Wolf of London uses 5 reels. The base grid height has not been officially confirmed, but the grid expands downward when Full Moon symbols land, adding extra rows during those spins.
Conclusion: Who Suits Wolf of London
Wolf of London slot targets players who enjoy persistent collection mechanics layered on top of base-game play. The crystal counter system gives every expanded-reel spin a secondary purpose beyond immediate wins, creating a chase that carries across dozens of spins. Players who find standard spin-and-wait gameplay monotonous will appreciate having a visible goal building on the side of the screen.
The Victorian werewolf setting and expanding-reel mechanic give the title a distinctive identity within Yggdrasil's catalogue, separating it from the studio's more common Norse mythology releases. Players who enjoyed the collection-based progression in Wolf Hunters will recognise a similar rhythm here, though the crystal system adds a multi-track element that the single rage meter in Wolf Hunters does not.
Because official RTP, volatility, and max win values have not been published, committing real funds before the full spec sheet is available carries unnecessary uncertainty. Wait for the demo launch, test how frequently Full Moons expand the reels and how quickly crystal counters fill at your preferred stake level, and confirm the active RTP in the paytable before switching to real money.
Filip Gromovic is a senior slots reviewer here at FreeSlots99 with over five years of experience evaluating the latest drops in the world of iGaming.
Being a slot fan himself, Filip approaches slot ratings just the way we like it – professionally, but also from a player’s standpoint.
That enables him to give his unbiased take on the slot’s features, gameplay and design, while only recommending top-tier releases to our readers.
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Having served FreeSlots99 for more than 5 years as a senior content editor and reviewer, Nashon Khamala has extensive knowledge in game slots and iGaming.
His membership in the Editorial Freelancers Association helps him deliver content that reaches both editorial excellence standards and an engaging information level.
By using his expertise in slots games combined with player-focused analysis, Nashon delivers a professional evaluation of slot features and player experiences in his reviews.
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