UPDATE: Server Mutators for the shutdown are no longer needed. Since the Master Server Mirror would mirror to a dead server, and OpenSpy not being needed as players joining a server now is likely already upgraded (unless they’re going off of a favorites list)
Fortunately, 0xC0ncord (aka TonyTheSlayer) has been working hard to build mutators that will help make the process painless!
Master Server Mirror (Not relevant as of 1/24/23)
If you have upgraded your server to the new OpenSpy master server, you can still have your server advertise on Epic Games’ one until they shut it down. This runs as a ServerActor so that means no client download. It’s built to be simple and to the point. Download includes set up instructions.
OpenSpy Info (Not relevant as of 1/24/23)
This mutator is designed for players visiting your server. It will cause a popup to let them know about the master server change and how to make the changes required. This is designed to operate like DruidsPlayerAgreement mutator that has been around for a long time for servers.
Installation is very easy, and once set up this is what the players joining will see:
