AKITSORA GAMING

Ninpo

A bamboo night, and the scroll unrolls.

Ninpo is a 5×3 ninja slot with 10 fixed paylines. Scrolls act as Wild and Scatter; a randomly selected secret-art symbol expands across qualifying reels during free games.

Demo play uses virtual credits with no monetary value.

RTP
96.85%
Volatility
High11.16
Max win
5,000× bet
Bonus buy
70.40× bet

In-game screens

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

Ninpo — Base game
Base gameFive reels, three rows, 10 fixed paylines counted from the left.
Ninpo — Line win
Line winWinning lines cycle one at a time; the polyline stops at the last winning reel.
Ninpo — Free games
Free gamesThe secret art needs no payline — enough reels and it fills them entirely.
Ninpo — Big win
Big winCapped at 5,000× the bet per round.
Ninpo — Bonus buy
Bonus buyPay 70.40× the bet to enter free games; RTP calibrated separately.
Ninpo — 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 × 3 reels, 10 fixed paylines (book-style expanding symbol)
Return to player (RTP)96.85%
Bonus buy RTP96.88%
VolatilityHigh (11.16)
Hit rate24.53%
Max win per round5,000× bet
Free spins frequency≈ 1 in 196.55 spins
Calibration sample30,000,000 spins, standard error 0.20%

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

  • A 5 × 3 reel set on 10 fixed paylines. Wins are counted from the leftmost reel, on consecutive reels only.
  • Each line pays one combination: the line is read as its leftmost regular symbol, and every scroll on it substitutes for that symbol (a line of scrolls alone pays as the top symbol); separate lines are added together.
  • Line win = bet × the symbol's multiplier — paytable figures are multiples of the total bet.
  • The scroll substitutes for any symbol and pays without a line — it is both Wild and Scatter.

Paytable

Values are multiples of the total bet: line win = bet × symbol multiplier. An expanded secret-art symbol pays its multiplier × 10 lines.

Symbol2 reels3 reels4 reels5 reels
Ogama, the giant toadHigh-pay 110100500
Kusarigama, chain and sickleHigh-pay —450250
Shuriken throwing starsHigh-pay —450250
Kaginawa grappling hookHigh-pay —15110
Fire-release talismanLow-pay —0.75312.5
Water-release talismanLow-pay —0.75312.5
Wood-release talismanLow-pay —0.75312.5
Metal-release talismanLow-pay —0.75312.5
Earth-release talismanLow-pay —0.75312.5

Special symbols

Scroll

Wild and Scatter in one. It substitutes for any symbol; 3 or more anywhere on the reels trigger the free games and pay 2/20/200× the total bet by count.

Features

Scroll — Wild and Scatter

The only special symbol. It substitutes for any symbol, and 3/4/5 anywhere on the reels pay 2/20/200× the total bet — no line, no adjacency needed.

Free games — the secret art

3 scrolls award 10 free games. One secret art symbol is drawn at random beforehand: during free games it needs no payline — whenever it lands on enough reels (scrolls do not count toward it), those reels are filled entirely and paid at its multiplier across all 10 lines.

Shadow clones

3 more scrolls during free spins add 10 free spins and one more secret art symbol, up to 3 at once.

Bonus buy

Pay 70.40× the bet to enter free games directly. Its RTP is calibrated separately from base play (measured 96.88%).

Technical

Game codeaki_ninpo
Math versionbk96
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.

Makimono wa, hirakareru made nan no jutsu ka wakaranai.
— Until it is opened, no one knows which art a scroll holds.

I. The house in the shade of the hill

The house has no name. By day it is a merchant's place in the shade of the hill, with a sun-bleached curtain over the door and someone working an abacus in the counting room. At night, the door to the room furthest inside is opened.

There are several hundred scrolls on the shelves. Every one is rolled tight and tied with a vermilion cord, and not one of them is labelled — a labelled scroll hands over the art itself on the day someone walks off with it. So a scroll has only two states: rolled, and nobody knows what it is; opened, and it has already been used.

II. The five talismans

An apprentice does not begin with the art. He begins with the paper.

Fire, water, wood, metal, earth — five talismans, the same strip of paper, the same hole for the cord. Only the colour of the paper and the single character on its face are different. The master sets all five on their knees in an unlit room and does not let them sleep until they can tell one from another by touch. On the night it matters nobody is going to hold a lamp for you; the talisman is read with the pads of the fingers, off the grain of the paper.

None of the five is sorcery. Fire is knowing which way the wind runs. Water is knowing when the river rises. Wood is knowing which stand of bamboo will take a footstep without a sound. Metal is knowing the angle at which a blade throws light. Earth is knowing which patch of ground is hollow underneath. They were written down only because human memory cannot be trusted.

III. The head of the house and the kunoichi

Two people are standing in that room.

One is the head of the house: a man in his prime, black shinobi dress, headband pulled low, a grappling rope at his hip. One hand is raised with a talisman against the palm. When he holds still he looks like a length of timber against the wall.

The other is the kunoichi: young, dark indigo dress with a scarlet sash. One hand is raised, a talisman in that palm too; the other holds a kunai blade-down. Above the face cloth there is nothing but a pair of eyes — and she is the only one in the house who smiles first.

Both of them are human, and nothing on those shelves was anyone's by birth. Every art up there is something a person used one night, came back from, and then wrote down and rolled up — several hundred scrolls is that happening several hundred times. What the school actually passes on is not power. It is the price somebody already paid.

IV. The four old scrolls

Four scrolls on the shelf are older than the rest, the paper gone almost brown. They hang on the wall rather than sitting in a box — forget what they look like, the master says, and the school is finished.

The first is a giant toad, warts across its back, another scroll held in its mouth. Nobody knows what is written in the one it carries; every copyist since has drawn it exactly as it is, still rolled.

The second is the chain and sickle: a chain drawn taut between the blade and its weight, the ink thinning at the end of the stroke as though the chain were still swinging.

The third is three throwing stars stacked one on another, the lines cut so hard they show through the back of the paper.

The fourth is the grappling hook, claws up, the rope gathered into a coil. It is the first thing the school teaches and the last thing anyone truly learns: getting up there is half of it, getting back down is the other half.

V. The secret art

A few nights a year, scrolls on the shelf come loose by themselves. 3 of them at once and the night has begun — the next 10 rounds all belong to it.

The cord drops, the paper lies flat, and whichever figure surfaces on it is the art for that night. It cannot be chosen — if it could be chosen it would not be a secret art.

On any ordinary night this school works to form: 10 set routes, counted from the leftmost reel, and a single break anywhere along one ends it. Once the chosen art shows itself, form stops mattering. It does not have to line up, it does not have to stand next to anything: let it appear widely enough that night and the whole bamboo grove becomes that one art. If fire starts, all of it starts. If water rises, all of it rises. Only then do the people on the other side understand that they are not facing two of anything. They are facing an entire scroll.

VI. Shadow clones

Later still, a second scroll comes loose. Then a third — 3 arts in one night is all the paper will take. Gather 3 scrolls again and the night runs another 10 rounds, with every art already open still open.

Each one adds a shadow to the room. The shadows do exactly what the people do, and they do not tire, do not hesitate, do not lose half a beat when a bamboo leaf gives underfoot. By the end, nobody in that house can tell which one is the head of the house, which is the kunoichi, and which is only ink on paper.

Before dawn the paper rolls itself up and the cords tie themselves again. The house goes back to being a merchant's place in the shade of the hill, with someone working an abacus in the counting room.

VII. Into the bamboo

Somebody once asked the head of the house which art in the scrolls was the strongest.

He thought about it and said: the one that leaves them certain nothing happened at all.

Then he blew out the lamp. What was left in the room was the smell of paper, and the sound of the bamboo turning over in the wind.

Want to spin Ninpo 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.