It works if you don't mess it up. It supports 2 and 4 players games.

• NodeJS
• npm install ws
• npm install readline-sync
• Copy the halite executable into the root of the respository (only required by the host)
• Create a file called mybot_command.txt and write the command to execute your bot e.g. cd "C:\MyBot" && .\MyBot.exe"

• The host will create a room running node halite2-relay-server.js. You'll be asked about the size of the room (2 or 4) and the port you want to run the server at.
• With the server running, and it doesn't matter if you are not the host, all the players will have to run node halite2-relay-client.js. The program will ask about the IP address and the port of the server. If you are the host, you'll write 127.0.0.1 or localhost.
• When all players are connected a match should start, everyone will see the output of the halite executable. At the end of the match everyone gets a copy of the replay file.
• A new game will start in 10 seconds.

Thanks to fohristiwhirl for the idea of the relay.