IBM Internship interview questions

I applied through their online platform, and after one month I received a call. They call me for an interview and some tests. In the interview they show me a power point presentation about the products they offer, and then I had to writte an essay telling them what have I done, why IBM, what is my favorite product, what do I expect.... very easy. After that I went to a different room with other 40 applicants, and we had to build a building with jenga, and we had to talk in groups of 6 people about one important person in human history. I think is difficult for them to choose the right candidates because they evaluate too many people at the same time.

It was an interview 1:1, there were two managers and my future colleagues. They asked classic questions but also some interesting ones (e.g. tell us a joke). It took some 60 minutes and I was really tired afterwards. They were nice, it was obvious they liked their jobs.