This is the source code for Duelyst, a digital collectible card game and turn-based strategy hybrid developed by Counterplay Games and released in 2016.

If you'd like to run the game locally or contribute to OpenDuelyst, check out our Documentation, especially the Roadmap and Contributor Guide.

You can also join the OpenDuelyst developer Discord server here. This Discord server is focused on the development of OpenDuelyst, and has channels for frontend, backend, and infrastructure discussions, but it is open for anyone to join.

Desktop clients for Windows, Mac, and Linux can be downloaded on the Releases page. They can be used against your local environment.

We have basic support for playing on mobile web currently. To hide the status/navigation bar in Chrome or Safari, open the game and select "Add to Home Screen". When you open the game from the home screen, the status bar will be hidden.

If you encounter a bug and would like to report it, first check the Open Issues to see if the bug has already been reported. If not, feel free to create a new issue with the bug label.

If you would like to request a technical feature or enhancement to the code, you can create a new issue with the enhancement label.

Since OpenDuelyst is currently focused on recreating the game as it last existed in v1.96.17, please avoid creating feature requests related to balance changes.

The game currently includes English and German localization. If you'd like to contribute translations for another language, take a look at the app/localization/locales directory. You can copy the en folder and start updating strings for the new language, then submit a Pull Request with your contribution.

There are about 4,500 localized strings, so this can also be done a little bit at a time. Once the translations are in, we can help get the language included in the game.

OpenDuelyst is licensed under the Creative Commons Zero v1.0 Universal license. You can see a copy of the license here.