Published as: Noor Shaker, Julian Togelius, and Mark J. Nelson (2016). Procedural Content Generation in Games: A Textbook and an Overview of Current Research. Springer. DOI: 10.1007/978-3-319-42716-4 Initial drafts of the chapters were posted online on this website in 2013, as they were written. They went through a number of revisions in 2013–2016; the PDFs above are the final authors' versions as