Sudoku Killer / 杀手数独

Released Oct 2018

Killer Sudoku (Sumdoku/Mathdoku/Addoku) puzzles include all the rules of regular Sudoku, but add in dashed-line 'cages', which must sum to given values. This great brain exerciser will provide you many hours of new Sudoku experience and be nice addition to your puzzle collection.

88% positive · 246 reviews

Done

All announced content has been released

High confidence

Done

All announced content has been released

High confidence

Where to buy

Steam Updated 3 Oct 2026 $0.89 $2.99 −70%

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Evaluation

Sudoku Killer launched on October 19, 2018 as a self-contained puzzle game featuring 100 Killer Sudoku puzzles. The store description and launch announcement describe a fixed set of content: 100 puzzles, multiple color themes, 10 soundtracks, Steam Achievements, and cloud saves. There is no DLC, no season pass, and no post-launch content roadmap associated with this game. The developer's news activity after launch shifted entirely to other projects — Nintendo Switch ports of other titles (June and October 2019) and a new game called Anomaly Hunter (announced in 2020 and still being promoted in 2021). None of these posts reference any planned updates or additions to Sudoku Killer itself. The last communication touching Sudoku Killer at all was its launch post on October 19, 2018. The store description does mention "Trading Cards, Badge, Emoticons and Backgrounds (Coming soon)" — a cosmetic Steam feature that was apparently pending at launch — but this refers to Steam platform items, not game content, and does not indicate ongoing game development. Sudoku Killer launched as a complete, finished product with a defined puzzle set and no announced post-launch content. The developer has moved on to other projects with no indication of returning to add content to this game.

Evidence

Launch announcement confirms the game shipped with its full feature set: 100 Killer Sudoku puzzles, color themes, soundtracks, and achievements. No post-launch content roadmap mentioned.

news post · Oct 19, 2018 source content shipped

high

Most recent developer news post (January 18, 2021) promotes Anomaly Hunter; no mention of Sudoku Killer updates. Developer activity has moved on to other projects.

news post · Jan 18, 2021 source development ending

medium

Media

Details

Developer

Konstructors

Publisher

Hook Games

Achievements

Platform

Windows, macOS, Linux

Controller

—

Steam Deck

Not rated

Players

Single-player

Casual Indie Strategy Puzzle Difficult Minimalist Abstract Relaxing Stylized

About this game

Sudoku (数独 sūdoku, digit-single) - is a logic-based, combinatorial number-placement puzzle. The objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 subgrids that compose the grid (also called "boxes", "blocks", or "regions") contains all of the digits from 1 to 9.

Killer Sudoku puzzles include all the rules of regular Sudoku but add in dashed-line 'cages' which must sum to given values. Killer Sudoku is also sometimes known as Sumdoku, Mathdoku or Addoku.

The name 'Killer' Sudoku arises because of the wicked twist on the standard Sudoku puzzle, since you must not only place each of the numbers 1 to 9 (or 1 to the size of the puzzle) into each of the rows, columns and bold-lined 3x3 (or other size) boxes but you must also place the numbers into each dashed-line cage so that they add up to its given total - and without repeating a digit in a dashed-line cage. ©