AKITSORA GAMING

Taisho Phantom Thief

Tonight, the calling card has already arrived.

Taisho Phantom Thief is a 5×4, 30-line silent-film slot. Undeveloped frames reveal one symbol together; in free spins they stick and climb to ×10 and a three-layer vault.

Demo play uses virtual credits with no monetary value.

RTP
96.63%
Volatility
Medium-high8.62
Max win
8,000× bet
Bonus buy
73.76 / 150.857× bet

In-game screens

Captured straight from the running game — real boards, real wins.

Taisho Phantom Thief — Base game
Base game5 reels × 4 rows, 30 paylines, framed as strips of film. The benshi narrator stands to the right of the screen.
Taisho Phantom Thief — Film reveal
Film revealA stack of undeveloped frames reveals as one symbol before the lines are counted.
Taisho Phantom Thief — Hundred Faces
Hundred FacesDeveloped frames stick for the round and reveal again together every spin; the panel shows the frame count and the board multiplier.
Taisho Phantom Thief — Big win
Big winCapped at 8,000× the bet per round.
Taisho Phantom Thief — Bonus buy
Bonus buyTwo tiers: 73.76× for Hundred Faces, 150.857× for opening frames.
Taisho Phantom Thief — In-game paytable
In-game paytableThe same game definition as the table on this page: the game receives it from the server, and this page reads it at build time.

Specification

Type5 × 4 paylines (30 lines, 3+ consecutive reels from the left)
Return to player (RTP)96.63%
Bonus buy RTP (Hundred Faces)96.63%
Bonus buy RTP (Hundred Faces — opening frames)96.63%
VolatilityMedium-high (8.62)
Hit rate26.88%
Rounds winning ≥ 1× bet12.60%
Max win per round8,000× bet
Free spins (Hundred Faces) frequency≈ 1 in 183.82 spins
RTP verificationExact base game + 40,000,000 feature samples; combined RTP 96.6198%, 2σ margin ±0.0151 percentage points; independent implementation (separate code, not the engine) with 1,000,000,000 feature samples: combined RTP 96.6297%, 2σ margin ±0.0027 percentage points

Game math specifications and the paytable are read at build time from the definitions shared with the server code. See Math version for the configuration shown; confirm any other version or operator-specific settings separately.

How wins work

  • The grid is 5 reels × 4 rows with 30 fixed paylines.
  • A line pays when the same symbol appears on 3 or more consecutive reels from the leftmost reel; only the highest win on each line counts.
  • When the reels stop, all undeveloped frames reveal together as one symbol before lines are counted. The calling card (wild) substitutes for regular symbols: on the base-game reels it sits on reels 2–4 only, but frames can also reveal as the calling card, which can put it on any reel (in Hundred Faces it only ever comes from a reveal).
  • Vault keys do not pay on lines: 3 or more anywhere start Hundred Faces (free spins).

Paytable

Values are multiples of the total bet for a line of that length: win = total bet × table value (the same numbers as the in-game paytable). In Hundred Faces every line win is also multiplied by that spin's board multiplier (see “Hundred Faces — the multiplier ladder”).

Symbol3 reels4 reels5 reels
Moon DropHigh-pay 0.41.54.5
Pocket watchHigh-pay 0.351.23.5
RoseHigh-pay 0.30.92.5
GramophoneHigh-pay 0.250.752
Top hatLow-pay 0.150.41.2
Walking caneLow-pay 0.120.351
GlovesLow-pay 0.10.30.8
Fountain penLow-pay 0.080.20.6

Special symbols

Calling card

Wild; substitutes for regular symbols and appears on reels 2–4. Film frames can also reveal as a calling card.

Undeveloped frame

Lands in stacks in the base game (mostly single frames in Hundred Faces). When the reels stop, every frame on the grid reveals as the same symbol (a regular symbol or the wild). In Hundred Faces frames become developed frames that stick for the round.

Vault key

Does not pay on lines. 3/4/5 anywhere start 10/12/15 spins of Hundred Faces.

Features

Film reveal

The reels carry stacks of undeveloped film frames. When the reels stop, every frame on the grid reveals as the same symbol — any regular symbol or the calling card (wild), never a vault key. A stack that covers a whole reel and reveals as a high symbol or a wild can join up lines across the grid in one go.

Hundred Faces — sticky frames

3/4/5 vault keys award 10/12/15 spins of Hundred Faces; 3 or more during the feature add 5 spins. In Hundred Faces every frame that lands becomes a developed frame and sticks for the rest of the round, and on every spin all developed frames — old and new — reveal again together as one new symbol.

Hundred Faces — the multiplier ladder

Every 5 developed frames lift the board multiplier one step: ×1 for 0–4 cells, ×2 for 5–9, ×3 for 10–14, ×4 for 15–19, ×10 for the full 20. The multiplier applies to that spin's line wins and never falls.

Vault break — the three-layer vault

Fill all 20 cells with developed frames and the vault breaks: that spin the whole grid is one symbol, every line wins, and the win is ×10. The next spin opens the vault: the cash layer (×5–×20) always opens, the jewel layer (×20–×100) may open, and if it does, the treasure layer (×200–×1,000) may open too; the layers are added and multiplied by ×10 (values are multiples of the total bet). The round ends once the vault is open; any remaining spins are not played.

Volatility — positioning

Volatility 8.62. Hit rate 26.88% counts rounds with any win; 12.60% of all rounds return at least the stake. The base game carries about 58% of the RTP — film reveals often join lines across the grid — and Hundred Faces arrives about once every 183.82 spins: the more frames develop, the higher the multiplier, and only a full grid opens the vault. Wins are capped at 8,000× the bet per round, and the round ends when the cap is reached. This describes the product's positioning and does not guarantee session outcomes.

Two-tier bonus buy

Pay 73.76× the bet for Hundred Faces (10 spins), or 150.857× for “opening frames” — Hundred Faces (10 spins) starts with 5 developed frames in random cells, so the first spin is already ×2. Each tier is priced from the expected value measured along its own buy path (buy RTP 96.63% and 96.63%) and calibrated separately from the base game.

Technical

Game codeaki_kaito
Math versionkt1
TechnologyHTML5, no plug-in; one client for desktop and mobile
ViewportLandscape with proportional scaling
In-game languageTraditional Chinese (additional languages on request)
CurrenciesTWD (others can be registered on request)
IntegrationTransfer wallet (Operator API v3), launch-token redirect

Sources & verification scope

This product specification is written and maintained by its developer, Akitsora Gaming (AKI電子 in Taiwan). Measurement methods and sample information for RTP, volatility and hit rate appear in the specification table. Sampled results have uncertainty; RTP describes long-run return, not an individual player or session outcome.

Internal simulations and tests are not independent certification. We do not currently hold GLI or BMM certification reports. Supply to a market requiring third-party certification depends on completing its requirements.

See slot game development and supply for integration and supply scope, About us for development and content responsibility, or contact us for a math summary, version confirmation or a correction to this page.

The story

Fiction and adapted settings written by Akitsora Gaming for this title, including invented dialogue and events. This is not a historical or folklore reference. The rules and specification tables define the gameplay and math.

The projector purrs in the darkened hall as the benshi snaps his fan beside the screen.
Her calling card is already on the desk; when the film develops, the vault will yield.

I. Silent Film and the Benshi’s Voice

In the picture palaces of the Taishō era, flickering silver screens carried no recorded sound, yet the theater hall was never silent for a moment. Standing beside the stage in round spectacles and a neat moustache was the benshi, folded fan in hand, voicing every character on screen and narrating every twist of the midnight plot. Gaslight glimmers through the London-style fog of the brick avenue while searchlights sweep across the clocktower slate.

With a master benshi standing at the wooden lectern, a reel of black-and-white celluloid became living theatrical drama for the packed house. Here the five-reel, four-row grid becomes that vintage silver screen, framed by ornate intertitle cards and warm projector light as a daring heist unfolds inside a Western-style mansion. With a tip of his silk top hat and a flutter of his white cape, the phantom thief turns the midnight chase into pure theater.

II. The Calling Card and Film Reveal

Tonight’s feature picture follows an elusive phantom thief who never strikes without fair warning to the authorities. Before every caper she delivers a wax-sealed Calling Card announcing the exact hour she will claim her prize; the police inspector cordons off the entire estate with searchlights, yet she slips past every guard in the hall. Gaslight glimmers through the London-style fog of the brick avenue while searchlights sweep across the clocktower slate.

Spinning down the columns are stacks of dark, undeveloped film frames cut straight from the reel. Each time the reels stop, every frame on the board develops in unison into one matching emblem—pocket watches, gramophones, police whistles, sapphires, or the Calling Card Wild itself—joining paylines across the screen in a single flash. With a tip of his silk top hat and a flutter of his white cape, the phantom thief turns the midnight chase into pure theater.

III. The Thief of a Hundred Faces

The morning newspapers call her Hundred Faces—a peerless master of disguise who wears a hundred different masks in society and never shows her own true countenance to a soul. Landing enough brass Vault Key scatters across the columns flips the silent-film intertitle card and opens the Hundred Faces free-spins feature. Gaslight glimmers through the London-style fog of the brick avenue while searchlights sweep across the clocktower slate.

Throughout Hundred Faces, every undeveloped frame that lands locks onto the screen as a sticky developed frame for the rest of the feature, and on every spin all locked frames re-develop together into one fresh symbol. As more frames cover the screen, the board multiplier climbs steadily up its ladder toward the vault. With a tip of his silk top hat and a flutter of his white cape, the phantom thief turns the midnight chase into pure theater.

IV. Cracking the Three-Layer Vault

When sticky developed frames finally cover every single cell across the silver screen, the phantom thief sheds her final disguise in a dramatic Vault Break: on that climactic spin the entire grid reveals one unified symbol across every payline at the top board multiplier while the theater erupts. Gaslight glimmers through the London-style fog of the brick avenue while searchlights sweep across the clocktower slate.

On the very next beat, the heavy iron door swings wide to reveal the mansion’s three-layer vault—opening the guaranteed Cash chamber first, then testing the locks on the Jewel chamber and the innermost national treasure, the Moonlight Treasure, before multiplying the combined haul as the benshi raises his fan in triumph. With a tip of his silk top hat and a flutter of his white cape, the phantom thief turns the midnight chase into pure theater.

Want to spin Taisho Phantom Thief yourself?

The demo needs no account — click and spin. For integration docs, the math summary or sandbox access, send us an email.

Demo play uses virtual credits with no monetary value.