1. First create an account on ZLOEmu (email and password from this site will be needed for authorization in ZClient).
2. Download and install ZClient instruction how to install ZClient
3. Download latest game version here https://goo.gl/Kh821J
4. Download ZLoaderx64 and put it to game exe https://zloemu.net/files/ZLoaderx64.exe
5. Launch ZClient and wait for successful authorization.
6. Run game with ZLoaderx64.exe
Login - your username, password - any.

If game restarts itself, after enable/disable mods for example, close it and run again with ZLoaderx64.exe

Works:
Authorization.
Server browser.
Creating public games.
Headless servers.

Not works:
Mod installing with game.
Autoupdates.
Linux version.

1. Download ZServer.exe https://zloemu.net/files/ZServer.exe
2. Download game client here https://goo.gl/Kh821J
3. Download ZLoaderx64 and put it to game exe https://zloemu.net/files/ZLoaderx64.exe
4. Configure server in data/server-settings.json (rename/copy from server-settings-example.json), login and password for auth - any.
5. Run ZServer, wait for update and "Ready".
6. Create bat file in folder with game exe, for example to run latest(by date) save:
ZLoaderx64.exe --start-server-load-latest --server-settings ..\..\data\server-settings.json
Or for my-save.zip:
ZLoaderx64.exe --start-server my-save.zip --server-settings ..\..\data\server-settings.json
Read https://wiki.factorio.com/Multiplayer for more.
7. Run created bat file.