A number of ethics guidelines have been released in recent years. This research comprises normative principles and recommendations aimed to harness the “disruptive” potentials of new AI technologies. Designed as a semi-systematic evaluation, this paper analyses and compares 22 guidelines, highlighting overlaps but also omissions. As a result, I give a detailed overview of the field of AI ethics.  By Thilo Hagendorff, University of Tuebingen, Germany.