4.5 hour total session consisting of 4 rounds. One of the sessions was a disaster, the others were better. On the bad session, there were language difficulties with the interviewer. Most of it was intentionally vague coding challenges plus "behavioral" questions that sometimes felt like a criminal interrogation. Despite 20+ years of experience, no one asked about my past projects. This will likely be the last time I attempt to interview with them. It's not worth the extensive prep required, all to work at a Hunger Games-like environment. I have better things to do.