AKITSORA GAMING

Osechi Tiers

A New Year's three-tier box, filled tier by tier.

Osechi Tiers is a 3-tier New Year's box: 6+ dishes or 3 noshi tags lock dishes for 3 respins, and each full tier opens the next. Fill all three for ×2 plus 500×.

Demo play uses virtual credits with no monetary value.

RTP
96.92%
Volatility
Medium-low2.91
Max win
1,000× bet
Bonus buy
9.874× bet

In-game screens

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

Osechi Tiers — The New Year's table
The New Year's tableA 3-tier lacquer box and 30 lines; a family member's chopsticks reach in from the top right.
Osechi Tiers — Line wins
Line winsLines pay from 3 reels, left to right; festive dishes carry values for the tally.
Osechi Tiers — Open the box
Open the boxFill the top tier to open the middle, then the bottom; lucky meanings raise, copy and add respins.
Osechi Tiers — Full box
Full boxAll three tiers full: ×2 plus 500×; a single round is capped at 1,000× the bet.
Osechi Tiers — Bonus buy
Bonus buy×9.874 to open the box with 6 dishes in the top tier.
Osechi Tiers — In-game paytable
In-game paytableThe RGS supplies the meanings, tiers and respins; this page reads the same game definition.

Specification

Type5 reels × 6 rows, 30 fixed lines, left to right from 3 reels, hold-and-respin across a 3-tier box
Return to player (RTP)96.92%
Bonus buy RTP96.92%
VolatilityMedium-low (2.91)
Hit rate34.17%
Rounds winning ≥ 1× bet24.08%
Max win per round1,000× bet
Hold and respin (Open the Box) frequency≈ 1 in 23.03 spins
RTP verificationExact base game + 10,000,000 feature samples; combined RTP 96.9018%, 2σ margin ±0.0231 percentage points; independent implementation (separate code, not the engine) with 2,000,000,000 feature samples: combined RTP 96.9150%, 2σ margin ±0.0016 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

  • 5 reels × 6 rows, 30 fixed lines: 3 or more matching symbols from the leftmost reel pay.
  • Celebration chopsticks are wild for regular symbols (not for dishes or noshi tags).
  • Festive dishes carry values and do not pay on their own. 6 or more in one spin open the box; with fewer, 3 or more noshi tags also open it (and deal 6 dishes into the top tier). Lines pay as usual on the triggering spin.
  • Every two rows are a tier: top, middle and bottom, 10 cells each, 30 in all.

Paytable

Values are total-bet multiples per line: a win = total bet × table value. Celebration chopsticks (wild) count in the line. Festive dishes carry values (0.5–20× the bet) and pay only when the box is tallied. The paytable is the same data shown in game.

Symbol3 in a row4 in a row5 in a row
Sea breamHigh-pay 2512
PrawnHigh-pay 1.6410
DatemakiHigh-pay 1.33.28
Kuri kintonHigh-pay 1.12.86.5
Black beansLow-pay 0.651.64
Herring roeLow-pay 0.651.64
TazukuriLow-pay 0.51.23
KobumakiLow-pay 0.51.23

Special symbols

Celebration chopsticks

Wild. Substitutes for regular symbols but not for dishes or noshi tags.

Noshi tag

No connection required: with fewer than 6 dishes, 3 or more noshi tags also open the box and deal 6 dishes into the top tier.

Festive dish

Carries a value (0.5–20× the bet). 6 or more open the box; in the bonus a dish sometimes carries longevity, prosperity, fortune or diligence.

Features

Open the box, tier by tier

Only the top tier is open at first: the triggering dishes lock in, and every other cell respins, starting at 3 respins and resetting whenever a new dish lands. Fill the top tier to open the middle one (respins reset), then the bottom. Lower tiers are harder to fill.

Four lucky meanings

Dishes landing in respins sometimes carry a meaning: longevity doubles its tier at the tally; prosperity copies a dish into an empty cell; fortune raises every dish's value one step; diligence adds a respin (up to 2 more than 3).

Full box

Fill all 30 cells — respins end at once, the total is ×2, plus the pine bonus of 500× the bet. It is the biggest round in the game.

The tally

When the respins end, each tier's dishes are added up (a longevity tier ×2) and the tiers are summed. Respins pay nothing; everything is paid on the tally spin. Dish values in the bonus go up to 20× the bet.

Volatility and positioning

Volatility 2.91. The 34.17% hit rate counts any winning round; 24.08% of all rounds return at least the stake. The base game carries about 57% of the RTP; the box opens about once every 23.03 spins, small and frequent. A single round is capped at 1,000× the bet and ends when it hits the cap. This describes the product's positioning and does not guarantee any single session.

Bonus buy

Pay 9.874× the bet to open the box with 6 dishes dealt into the top tier (values from the base-game table). The price follows the expected value of that purchase route (bonus-buy RTP 96.92%) and is calibrated separately from regular play.

Technical

Game codeaki_osechi
Math versionos1
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.

On New Year's morning, a lacquered three-tier box rests at the centre of the table.
Lift the lid with celebration chopsticks in hand, and good fortune unfolds tier by tier.

I. A Lacquered Box of New Year Wishes

Across Japan, the first morning of the new year begins around a gleaming three-tier box of osechi cuisine. Set beside tapered celebration chopsticks and folded red-and-white noshi tags, the stacked lacquer trays hold delicacies prepared before the turn of the year so the family hearth may rest in peace during the holiday.

Every classic dish on the reels carries a traditional blessing for the household: grilled red sea bream for celebration, curved prawns for a long life, rolled datemaki omelette for scholarship, golden kuri kinton chestnuts for wealth, glossy black beans, golden herring roe, crisp tazukuri, and tied kobumaki kelp rolls.

II. Opening the Tiers One by One

Land enough value-bearing festive dishes in a single spin—or gather enough ceremonial noshi tags across the board—and the lacquer lid lifts to begin the Open the Box respin feature. At first only the top tier is uncovered: the triggering dishes lock neatly into its compartments while the remaining open cells respin.

Each new festive dish that lands in an empty compartment locks into the tray and resets the respin counter back to the start. The moment every compartment of the top tier is filled, the middle tier slides open below it; fill the middle tier as well, and the deep bottom tier opens its doors.

III. Four Auspicious Meanings

During the respins, special festive dishes arrive bearing one of four traditional New Year wishes. A dish marked with longevity doubles the entire sum of its tier at the final tally, while a dish of prosperity duplicates itself into an empty compartment to help complete the tray.

Meanwhile, a dish of fortune raises the value of every dish already resting in the box by one step on the prize ladder, and a dish of diligence grants an extra respin beyond the usual reset. Piece by piece, the lacquer compartments fill with colour, flavour, and warmth.

IV. Happiness Stacked Upon Happiness

The reason New Year delicacies are packed into stacked lacquer boxes is to symbolise good things piling one upon another—kasane-gasane. Fill every single compartment across all three tiers, and the respins end immediately as the entire box total is multiplied before adding the grand pine bonus on top.

When the final tally is counted and every tier is summed together, the family claps around the table to welcome the year ahead. This festive culinary tradition is the game's theme rather than a promise: every spin's outcome is decided solely by the server's random number generator.

Want to spin Osechi Tiers 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.