To run the game locally, you will need to install Node.js (LTS suggested).
First, run the following command in your terminal (or command line) while being inside the checked out repository:
npm ci
After all the packages are installed, start up the game:
npm run serve
This will make the game served via your localhost, and the playable link will
be displayed in your terminal. The server doesn't need to be restarted
after you've made changes - just reload the page. The server can
occasionally crash, so check your terminal from time to time and run serve
again if needed.