There is a solution to play Mythruna on your own server.
If you are having problems with setting up you own server and connecting to it or
you try to join a new server and it says Invalid User ID or Password, then you have come to the right place.
Steps:
1. Open the Mythruna Server Application.
2. Type in the Name, Seed, and Owner info.
3. Then click Save and Run. 4. Now open the Mythruna Client.
5. Go to Multiplayer and type your server name in the Game Host section and click Connect.
6. Once you get to login screen click on Create New Account and input your info.
7. Now login with your new account and it should work.
The info is right here:
http://mythruna.com/mediawiki/index.php?title=Engine_Test_Build