F4MP VS NovusCore

That mods dead it seems as stated on their github. But there is a new WIP mod called FalloutTogether. If you want more details about check out this YT vid. However, it's still early In its stages and is pretty unstable only giving you like 5 minutes of playtime before crashing.

If you are talking about F4MP (a lot of Youtubers were talking about it a year ago) it is no longer being worked on.

There was a multiplayer mod for FO4 in development a while back, but last I heard its been canned by the devs. Here's a link to the github page if you want to check it out, though it is set to read only. However, there's recently another multiplayer mod in the works called FalloutTogether. Here's a link to a youtube video detailing it and its installation.

There's also numerous mods for Bethesda games to add some kind of multiplayer experience. F4MP has been a thing for a while now.

What you're describing sounds a lot like NovusCore. You should join their discord and see some of the footage they post. These guys are making their own client for 3.3.5, and it looks pretty good so far.

- NovusCore is an attempt to rebuild both the client and server from scratch, but is a very early prototype. Being helpful to this project likely requires more technical knowledge than the others at this stage, but they're very friendly people so there's nothing wrong with asking them directly if you think there's something you can do.

They won due to it being a way to validate keys, therefore being circumvention of the copyright theft prevention method. This would not apply here, if it would this would not exist.