I went to a group interview everyone was really friend the questions were easy. It was fun as we got to play with building blocks which i believe was to teach us a lot and my interviewer said we got the farthest she has seen in a long time. But she was really sweet overall and i got the job the same day. Just while doing the blocks(if you do them) don't loose your cool stay friendly like its just a big game...But overall just be yourself.