I'm about halfway through – so no spoilers please. I'm just curious to discuss it with other readers.
It's like a more sinister (fictional) version of the Cicada puzzles that were a mommy thing in hacker culture a few years ago. Two computer hackers start trying to solve online and IRL puzzles created by a mysterious group without fully understanding what they're getting themselves into.
Cults. Deaths. Hacker lore. Existential threats. I'm really enjoying it!