So....is there a way to...

block or at least delete all these spam threads?

+1

Our solution for blocking them is ongoing and obviously currently not effective!
Deleting them is something admins can do. Maybe we need more admins - any volunteers?

@Tavis: Sure. I’m an IT-specialist (allrounder). so what’s to do? I’m having some spare time (not much) and would help out.

Few options that would help – if the forum software supports them…
A. Add a contextual captcha: Ask a eg. question like: “This forum is about what game?” and accept case-insensitive “ACKS”, “ACK”, and “Adventurer Conqueror King” as answers. (Or “Adventurer Conqueror King is a <what?>playing game.”, etc.)
B. Initially moderate profiles and posts that contain links for new members. When someone posts a profile or a post that contains a non-spam link, turn off moderation for them.
C. Moderate new members. After one non-spam post demoderate them.
(I can volunteer to help deleting them.)

And I was kinda getting use to the nightly attacks of the handbag sales trolls and nhl Hershey goblins