Golem Sudoku is a free, open-source Sudoku game for developers and curious hobbyists who want to try a blockchain-linked puzzle on their own computer. It offers size variants of the classic grid and runs in a web browser through a local server. Before you start, know that its code has not been updated since January 2021, so treat it as an experimental project rather than a maintained app.
Setup is more involved than installing a typical Windows game. You run the yagna requestor service, set an app key as an environment variable, initialize payments, and start a local server, then open the game in your browser. Readers comfortable with the command line will get the most out of it. Players looking for a polished, ready-to-click puzzle should look at other options first.
What Is Golem Sudoku and How Does It Work?
Golem Sudoku places a familiar puzzle inside a blockchain-oriented setting. The game itself is a standard Sudoku board that you solve in the browser, with size variants to choose from. What makes the project distinct is its backend, which is designed to work with yagna, the software that runs a Golem requestor node.
In Golem terminology, a requestor is the side of the network that submits computing tasks and pays for them, while other nodes do the work. Golem Sudoku uses this arrangement as a practical example rather than a finished consumer product. The local server is built to work alongside the requestor service once it is running and payments are initialized.
Understanding this split sets realistic expectations. The puzzle rules are easy to grasp, but the infrastructure underneath is what makes the project interesting to developers.
Who Golem Sudoku Is For
Golem Sudoku suits three kinds of readers. The first is a developer who wants a small, readable project for studying how a browser game talks to a local server and a decentralized network. The source is public on GitHub, and the JavaScript and TypeScript code is a manageable starting point for experiments.
The second is a hobbyist who enjoys Sudoku and is curious about Golem integrations. Switching between size variants gives a simple way to practice on different grids while learning the setup.
The third is an instructor or community organizer running a workshop on blockchain tools. A demo like this shows how requestors and payments fit together without asking students to write code from scratch. Anyone who needs a dependable, low-maintenance puzzle app should choose a different program, since the project has not seen code changes since 2021.
Key Terms Behind Blockchain Puzzle Games
Blockchain projects use several terms that are unfamiliar outside the field. An app key is a secret value that identifies your application to a service. Environment variables store settings like that key outside the code, which helps keep it out of files you might share.
Payments are the other piece. Before a requestor can pay for tasks, its payment system has to be initialized so the service has an account to draw on. If the key or that account were exposed, it could be misused, so treat both the way you would treat a banking password.
A useful habit is to look up each term in the setup instructions before running a command. If a step is unclear, pause and learn what it does rather than pasting commands you do not understand.
Key features
Sudoku with size variants
Local browser interface
Open-source JavaScript and TypeScript code
How to install Golem Sudoku on Windows
- 1
Get the source code
Open the project repository at github.com/Dodecane/golem-sudoku and download or clone the code. Download only from the official website or the GitHub repository, and avoid copies posted on other sites.
- 2
Install the prerequisites
Install Node.js and yarn so you can run the start script. Yarn is a command-line tool installed through npm. Then set up the yagna requestor service by following the instructions the project links to.
- 3
Set the app key and initialize payments
Set your yagna app key as an environment variable so the server can read it. Then initialize yagna payments as described in the setup instructions before starting the server.
-
Start the server and open the game
Run yarn run start-server from the project folder, then visit localhost:3000 in your browser to reach the Golem Sudoku app.
System requirements
- Windows, named in the project documentation; test it on your own version before relying on it
- Docker, listed as a supported platform
- Node.js and yarn, where yarn is a command-line tool installed via npm and needed to run the start script
- A running yagna requestor service with an app key and initialized payments
How to use Golem Sudoku
Once the server is running, the game is simple to play, though the first session takes a little patience. Keep the terminal window open while you play, because the server must stay running for the page to work.
If the page does not load, check the terminal for error messages before changing anything else. Most setup problems come from a missing environment variable or a payment step that was skipped.
A typical session looks like this:
- Open localhost:3000 in your browser.
- Choose a grid size from the available size variants.
- Fill in digits so each row, column and box contains each number once.
- Start a fresh board at a different size to compare how the variants feel.
- Stop the server with Ctrl+C in the terminal when you finish.
Pros & cons
- Free to use with no purchase price
- Open-source code on GitHub that anyone can read
- Offers Sudoku size variants
- Runs in a regular web browser at a local address
- Useful as a learning project for Golem-style setups
- No code updates since January 2021
- Windows support is mentioned in the documentation but not verified
- Setup requires command-line work and yagna configuration
- No ready-made installer; you run the source code yourself
- Not suited for casual players who want a polished app
Is Golem Sudoku safe?
Golem Sudoku is unmaintained, so check its status before you begin. The code has not changed since January 2021, which means bugs and outdated dependencies may remain. Download only from the official website or the GitHub repository at github.com/Dodecane/golem-sudoku. Compare the SHA-256 checksum of any archive with the value the publisher lists, or check the Git commit signature when one is available.
Because the setup involves an app key and payments, treat your environment as sensitive. Keep the key private and never enter your seed phrase on third-party websites or into any program that asks for it during setup. Check the latest status on the official website before installing, and do not disable your antivirus to get the project running.
- Official source only. Download from github.com/Dodecane/golem-sudoku. Ignore ads and lookalike domains.
- Check the SHA-256. Compare the installer hash with the value the developer publishes before running it.
- Never share your seed phrase. No developer, support agent or website — including CryptApps — will ever ask for it.
Alternatives
Golem Sudoku differs from the other programs in this catalog mainly in purpose. Ajuna Sage Core is a modular game framework for developers building state-driven games, so it is a toolkit rather than a puzzle. Walnut App focuses on sharing CPU and GPU resources for cloud gaming and heavy tasks, which is closer to the computing side of Golem. Axie App is an account manager for claiming and transferring SLP tokens, and ToEarnFun is a Web3 fitness application. Golem Sudoku is an example project for a single puzzle, while the others serve different everyday needs.
Specifications
- Price
- Free
- Type
- Open source
- License
- —
- Latest version
- —
- Last update
- 12 Jan 2021
- Windows support
- Unverified (Windows mentioned in docs)
- Source code
- github.com/Dodecane/golem-sudoku
Frequently asked questions
Yes. The program is listed as free and open source, so there is no purchase price. Running the yagna requestor service involves payments, though, so read that service's documentation before you start and understand how its payments work.
It can be run safely if you take precautions. Download it only from the official source and verify the checksum or commit signature. The project has not had code updates since January 2021, so its dependencies may be outdated. Keep your app key private and never enter a seed phrase on a third-party website.
The project documentation mentions Windows, but support has not been verified. Test the game on your own version of Windows before relying on it. Docker is also listed as a platform, which may be an alternative route if the native setup gives you trouble.
Set up the yagna requestor service, set your app key as an environment variable, and initialize payments. Then run yarn run start-server in the project folder. Open localhost:3000 in your browser to see the game. Keep the terminal open while you play.
The last code update was on January 12, 2021, and no later changes appear in the project. Check the GitHub repository for recent activity before depending on it. Without ongoing maintenance, the project may not keep pace with changes to the tools it relies on.
Other programs in this catalog approach blockchain and games differently. Walnut App shares computing resources, and Ajuna Sage Core is a game framework for developers. If you only want a Sudoku puzzle, a standard offline Sudoku app without any blockchain setup is much simpler.
An app key is a secret value that lets your application authenticate with the yagna service. Store it as an environment variable rather than in project files, and do not share it. If you think it has been exposed, replace it and review your setup.
Verdict
Golem Sudoku is best for developers and curious hobbyists who want a small, open-source example of a Sudoku game connected to Golem's requestor tools. It is free, readable and playable once the setup is working. It is a poor fit for anyone who wants a reliable, regularly updated puzzle app, because the code has not changed since January 2021 and Windows support is unverified. Treat it as an experiment and follow the safety steps before running it.