Blackdong

multiplayer in blackdong is possible now using "evolve"

https://www.evolvehq.com/

to make it work with blackdong, join the blackdong party

https://www.evolvehq.com/recruit/party?token=player:WMU8FZoZ7rzD7OT8,party:ll6hslzxHkmmic07

which acts like a LAN master server.
you will obviously need to install evolve (like steam but supports lan like hamachi does but better)

and in-game you host by checking "sister" instead of "alone and ugly"

and there you go multiplayer woo

(you will need to change your name aswell to avoid auth problems on servers but i dont think its that big of an issue)