# 3Doku — 3-dimensional Sudoku

> 3D Sudoku puzzle game with intersecting 9x9x9 cube schemas. (iPhone/iPad app by Simone Tellini.)

- Source: https://appshunter.io/ios/app/3doku/id451510747 (this page in markdown: same URL + `.md`)
- Developer: [Simone Tellini](https://appshunter.io/developer/372931565)
- Category: Games, Entertainment, Puzzle
- Price: $2.99
- Rating: 5.00/5 from 1 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 1 MB
- Languages: English
- Released: 2011-07-30
- Data updated: 2026-06-21
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/3doku/id451510747/reviews.md

## What is 3Doku?

Are you addicted to Sudoku? Can you solve a Sudoku schema blindfolded with your hands tied behind your back?

Do you need more complexity? ...more challenge? ...more headache? ...more dimensions?

Try 3Doku!

3Doku brings the traditional Sudoku game to the third dimension, providing endless fun for the _serious_ Sudoku player.

In a 9x9x9 cube, 27 Sudoku schemas intersect one another along the three axis. Every 9x9 bi-dimensional schema must be solved keeping in mind that every single cell belongs to the selected schema and also to the other two placed on the orthogonal planes.

With 4 difficulty levels and 4 initial values distributions you can customize your game and have every time a new exciting challenge to solve.

## Key features

- 3-dimensional Sudoku puzzles
- 9x9x9 cube gameplay
- 27 intersecting Sudoku schemas
- 4 difficulty levels
- Customizable initial value distributions
- Endless challenging gameplay

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/3doku/id451510747/reviews.md

### 2/5 — Tedious

*2014-05-14, version 1.2*

Started out good with a nice challenge aspect, but got tedious really fast. It wasn't challenging anymore when you knew which numbers went where, but had to do it 100 times to fill everything in.

### 4/5 — Great concept, but still some flaws

*2012-10-27, version 1.1*

The puzzles are nearly impossible to solve at hard and above without enabling all options.  However, manually removed hints cannot be undone, which means you can make a mistake and never get back to a valid puzzle using the undo button.  Also, the auto fill function rarely fills all the cells left with only one hint, which can be annoying.  Nobody would want to try to fill in several hundred numbers by hand.  This should be fixed.  Finally, the cube graphic showing initial, solved, and current cells will never update on iPad 3 with iOS 5 until you rotate the screen orientation.

However, if you have plenty of time, these hard puzzles take some work to solve, and the Monster puzzles are nearly impossible without advanced solving techniques like fish and inference chains.

Once the above problems are fixed, I will re-rate this as five stars.

### 5/5 — Looks much more complicated, is actually simpler than normal Sudoku

*2012-01-30, version 1.0*

As with all derivates of Sudoku that try to "complicate" the game, they make the game actually easier to solve since they add more restrictions to each layer. So, while in an ordinary Sudoku, each cell has 3 restrictions, in this version, it gets two additional sets of 3 restrictions from the two other layers that the cell is intersecting with. Now this is not to say that it is not a fun thing, as it makes the game a lot longer to manually solve, since you have like 729 cells to fill.

Bottom line: recommended, but not for complexity, but for length of play.

M

P.S. While reviewing the more difficult levels, I see that the game offers levels where every single layer cannot be solved on its own, i.e. you don't find one single cell that's not unambiguous. In addition, the "wrong cells" counter does not count cells that were wrong but did not have any conflicts so far, which is great as you may well be heading the wrong direction for hours and you cannot simply guess. These two aspects make the game a lot harder to solve on any non- novice level than initially thought, which makes it have a clear added value over a simple 2D sudoku. Hence, a clear recommendation.

## Frequently asked questions about 3Doku

### What is 3Doku?

3Doku is a paid puzzle game that takes the traditional Sudoku experience into the third dimension. It features complex 9x9x9 cube puzzles where 27 Sudoku schemas intersect.

### How many difficulty levels does 3Doku have?

3Doku offers 4 distinct difficulty levels to cater to players of all skill levels. It also provides 4 initial value distributions for further customization.

### What devices is 3Doku compatible with?

Currently, 3Doku is supported on iPads. It was last updated on April 21, 2023, with version 1.7.

### Does 3Doku have ads?

No, 3Doku does not contain advertisements. It is a paid application with no in-app purchases or ads.

### What is the age rating for 3Doku?

3Doku has an age rating of 4+, making it suitable for a wide range of players. The game was originally released on July 30, 2011.

### Can I play 3Doku offline?

As a single-player puzzle game, 3Doku is designed for offline play. You can enjoy its challenging puzzles without an internet connection.

### What makes 3Doku different from regular Sudoku?

3Doku introduces a third dimension to the classic Sudoku. Instead of a flat grid, you solve a 9x9x9 cube where 27 different Sudoku puzzles intersect, significantly increasing the complexity.

### How often is 3Doku updated?

The latest version of 3Doku, 1.7, was released on April 21, 2023. While updates may not be frequent, the game is stable and offers a complete experience.

## Version history (last 5 releases)

### 1.7.1 — 2026-06-12

Minor update to the internal engine

### 1.7 — 2023-04-21

Minor update

### 1.6 — 2020-03-30

Improved Dark Mode support

### 1.5 — 2019-10-09

Minor update

### 1.4 — 2016-09-20

The text of the selected cell is now easier to read

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## More apps by Simone Tellini

- [Wiz Solitaire](https://appshunter.io/ios/app/wiz-solitaire/id372931562)
- [3Doku for iPhone](https://appshunter.io/ios/app/3doku-for-iphone/id452799900)
- [Wiz Solitaire Collection](https://appshunter.io/ios/app/wiz-solitaire-collection/id662512026)
- [Soundwaves](https://appshunter.io/ios/app/soundwaves/id736139596)
- [Pathle](https://appshunter.io/ios/app/pathle/id850545047)

All apps by Simone Tellini: https://appshunter.io/developer/372931565

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-21.*