FromSoftware has taken the Dark Souls 2 and Dark Souls 3 servers offline on every platform.
Its player support account said it found a problem with the servers and is keeping them down until it has more information.
Both games had short, scheduled maintenance earlier this month that ended on time.
This shutdown is broader, covers every platform at once, and has no stated restoration window.
Until FromSoftware posts an update, co-op and invasions stay unavailable.