Wow, I hadn't thought of that, but you're correct. It's such a shame as it's an anti-Nazi game...and an amazing one at that.
The issue with "Hans Kloss" are the swastika in the game. To promote a game with such a content is a serious crime in Germany. https://en.wikipedia...uch_section_86a
Since the book only features releases from back in the days any other game could have only be added via the special pledge level. Quality-wise there are tons of Polish games that would have to be in the book.