Head over to the website of the company go to the about section and read about their values. They usually list something like teamwork, communication, working autonomously, speed, or quality. You pick 2-3 of these values and that’s what you talk about when they ask about yourself.
For the actual technical part it’s hard to prepare for. Most people don’t actually care about you being perfect but just want to see if you actually are familiar with what you said you are. So as long as you have an idea what you are talking about you will be fine.
Even if you don’t know the answer, just come up with something that could work. Don’t just say you don’t know. Explain your train of thought as to why your solution could work. And any other ideas you might have.
I am slightly annoyed that they didn’t use the Starfarers of Catan as the base for this game. Would have made more sense.
But I suppose Starfarers just isn’t as popular so that’s why I am only slightly annoyed.