
Download and install necROmantic with the official installer. It is lightweight, puts a shortcut on your desktop and, when you open it, updates the client automatically before launching the game.

Instalar_necROmantic.zip with the button above.
Instalar_necROmantic.exe.
C:\Juegos\necROmantic. Do not install into C:\Program Files, the Desktop, Downloads, or any folder synced with OneDrive or Google Drive.
The updater and the game are two different things: the installer only puts the updater in place (around 65 MB) and it is the updater that downloads the game afterwards. If you ever want to start from scratch, there is a Clean installation button inside the updater itself.
Windows distrusts any program without a commercial digital signature, which costs several hundred euros a year. It happens to every private server. If you downloaded the file from this site, it is ours.


The screenshots above are from a Spanish Windows, so the buttons read Más información and Ejecutar de todas formas. They sit in exactly the same place on an English one.
It saying Unknown publisher means precisely that: we have not paid for the signature. It says nothing about what is inside the file.
You do not need to configure anything to play: the client comes ready. If you want to change the resolution or the sound, open the updater and click Settings. That opens opensetup.exe, the client's settings screen.
Ragnarok is a 2002 game and needs pieces that Windows no longer ships by default. First of all, read what the updater tells you: if the game closes right after opening, it explains it on screen and tells you what is missing. If it still will not start, or you get a black screen:
C:\Juegos\necROmantic by default).
redistributable subfolder.
vcredist_aio.exe and install every Visual C++ package it offers. If Windows asks to restart, restart before carrying on.
dxwebsetup.exe. It needs an internet connection to fetch the DirectX components.
If the problem persists, the updater has a Copy diagnostics button: paste that text into Discord and we will be able to tell you what is going on. There is also a View log button that opens the incident file in Notepad.
If your antivirus deletes game files, add the C:\Juegos\necROmantic folder to its exclusions and then use Clean installation in the updater to download it all again. The Ragnarok executables are unsigned and some antivirus programs quarantine them without warning.