Design and Theme
🖼️ Graphics
The reels spin against a misty London backdrop with bridges, lamps, and cobbled streets fading into the haze. The frame is trimmed with brass and wood, hinting at Sherlock’s study rather than a casino.
Symbols echo the era — polished tools, magnifiers, and other detective paraphernalia. When the bonus starts, light and tone shift: the fog thickens, shadows deepen, and full-height wilds stretch across the screen like silhouettes caught in a lamplight. It feels more like a scene from a mystery film than a slot round.
🎶 Sound
The score keeps a cool head: a low, slightly mysterious theme straight out of a detective drama. Reels land with a muted metallic thud. Scatters and wilds arrive without fanfare; during free spins, the tempo lifts and the music tightens, nudging you toward a small climax every few seconds.
Mechanics
|
🥁 Grid size |
5x3 |
|
📊 Paylines |
25 |
|
➕ Bonus game |
✅ |
|
🤑 Jackpot |
❌ |
|
💸 Extra bet / Ante Bet |
❌ |
|
🪂 Fixed multipliers |
❌ |
|
♻️ Respins |
❌ |
|
❎ Gamble |
❌ |
Winning Combinations
Top symbols:
|
Symbol |
3 |
4 |
5 |
|---|---|---|---|
|
221B Baker St |
x2 |
x10 |
x40 |
|
Magnifying glass |
x1.6 |
x12 |
x32 |
|
Revolver |
x1.2 |
x10 |
x24 |
|
Violin |
x1 |
x7 |
x16 |
|
Pipe |
x0.8 |
x5 |
x12 |
|
Deerstalker hat |
x0.6 |
x3 |
x6 |
Low symbols:
|
Symbol |
3 |
4 |
5 |
|---|---|---|---|
|
A / K |
x0.4 |
x1 |
x2 |
|
Q / J |
x0.2 |
x0.4 |
x1 |
Special Symbols
- Scatter (queen portrait): Appears only in the base game and trigger Free Spins. The scatter itself does not pay and can land anywhere on the reels.
- Sticky Wild (moustached gentleman with “WILD” plaque): Active only during free spins. Substitutes for all regular symbols and remains fixed in place for several spins once it lands.
- Expanding Wild (tall detective figure): Appears in the base game and, during the bonus, only on reels without sticky wilds. Expands vertically to fill the entire reel whenever it forms or improves a winning combination.
Bonus Game
The Free Spins feature is triggered when scatter symbols appear anywhere on the reels:
- 3 Scatters — 10 FS
- 4 — 15
- 5 — 20
Throughout the bonus, both Sticky Wilds and Expanding Wilds remain active according to their mechanics. Retriggers are not available.
RTP, Volatility, Max Win
RTP — 96%. Volatility is high. Max win is capped at x1600 of the bet.
Our Verdict
We found the rhythm of Sherlock's Casebook to be clean and lively. Small and medium wins appear roughly every five spins, keeping the balance steady. The bonus appeared quickly during our test and paid out around x120, aided by frequent Expanding Wilds and a couple of Sticky Wilds.
It's not for players looking for crazy mechanics, but if you're looking for a classic slot with standard Free Spins, this is definitely a recommendation.
If you enjoy a similar tempo and Sticky Wilds in the Free Spins, try Prison Escape. For something louder, with cascades and multipliers up to 1000x, check out Gates of Olympus 1000.
Post by:
