Finally a new url to The Python Game Book works:
Reasons: the book is more than just a book about pygame, and python is the one element important for all three major parts of the book: programming, 2D graphics and 3D graphics.
At the moment, the new url is only a simple forwarding so that the “real” url shows up in the browser:
http://www.spielend-programmieren.at/pythongamebook, hopefully not scaring readers away.
A better solution would be to replace the “www.spielend-programmieren.at” part with “www.pythongamebook.com” but beside a very costly solution i have not figured out how to do that.