Game · Puzzle, board & word games

Sudoku

Sudoku is a logic puzzle, available on Linux.

Completely free
Linux
Open source

At a glance

All of Sudoku is free: no feature is locked behind a paid plan, and its code is open.

Its licence (GPL-3.0+) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

Open source code
Commercial use allowed

About

Sudoku is a puzzle app that lets you solve classic number-placement challenges. It features a clean, distraction-free design with a simple interface to keep you focused and engaged. Features: Modern GTK4 and libadwaita interface Keyboard shortcuts for quick access to all functions Save and load games seamlessly to continue your progress anytime Highlight active row and cell to improve focus and ease of play Conflict highlighting to help identify mistakes, ideal for beginners Suitable for all skill levels, from beginners to experts

Description from Flathub — AppStream (Flathub)

Sources and checks

Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) — 8 November 2026
Last technical check: 6 November 2026
Description from Flathub — AppStream (Flathub)

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KMahjongg is a solitaire game, available on Windows and Linux.

Completely freeWinLinux