Bloodborne seamless co-op is now working on shadPS4
Second edit*
Title should be modded co-op. True seamless is under works by a very dedicated mystery man who's put in more time than you can imagine. Calling what I've done seamless is a discredit to just how hard that level of work is. He made a reddit post about his progress and got instant banned. Go show his YT channel some love please Bloodborne Seamless latest Vid
Edit*
Firstly, just to be very clear: I'm not affiliated with the shadPS4/shadNet teams or The Hunter's Dream. Please don't spam those groups asking for support with my forks. If you have questions or find issues with this, use my GitHub repos.
Secondly, the majority of the credit is not mine, it's the shadPS4 and shadNet team that developed 99% of this. I just tacked on some stuff. Once again, don't spam those groups asking for support with my forks. I just want to make sure credit goes to the right place
Original*
I've been working on two forks that get seamless co-op working in Bloodborne through shadPS4/shadNet. shadNet is extremely lightweight, so as long as you don't have a toaster, you shouldn't have an issue hosting it. To be clear, this is per shadNet server. Meaning someone has to host it, I'm not hosting a server where thousands of users can all join.
You can summon a friend with the normal bells, including across different maps, and have them pulled into your world.
It's still experimental and the setup isn't exactly plug-and-play yet. If you're fairly technical you should be able to follow the READMEs. If you're not, you'll probably want a technical friend to help you get everything running. Use the Releases page on each fork, as it is up to date with my source code.
But yeah. Bloodborne seamless co-op on PC is actually working.
shadPS4 fork:
https://github.com/Wozzardman/shadp2p
shadNet server fork:
https://github.com/Wozzardman/shadnet-p2p
Back up your saves before messing with it. There are still things being worked out.
Lastly, I'm married, just had my first kid, and have a full-time job. Don't expect response in a timely manner lol. Did this for a friend and found out there was a larger community who wanted it so I'm just sharing, not dedicated IT help-desk.