The official website for The Settlers of Catan

Question about Catan - Cities & Knights for PC/MAC Why is there no hotseat mode?

Answer

Experience with other projects had shown that this mode is not used very frequently. In addition to that, we had to focus on the users’ most essential requests, to avoid creating a budget overrun. We therefore decided to do without a hotseat mode and put more effort into the Campaign and the computer opponents instead – something that many comments about the first PC game “Catan – The First Island” had regarded as important.