Host as a Server on port 80700 (BOT-00) to play against the AI or make decks without another device.
Need help? Read this: https://github.com/Chig00/demiduel/blob/master/README.txt
Source code: https://github.com/Chig00/demiduel
This game is completely free. Not just free to download, not just ad-free, not just free of in-app purchases, but also free for you to download the source code and assets and modify and redistribute them as you see fit. Credit would be appreciated, though!