The book itself is horrendously produced. The ruleset is fine and works flawlessly as a sci-fi ttrpg system.
My biggest complaint is the quality of the physical print. It is by far the worst quality book I have ever purchased. There are air pockets in the back between the board and cover art.
For $60, the quality was well under my expectations. Which is super disappointing because I genuinely planned on buying Worlds Without Numbers. Now I will be staying away, perhaps even from the PDF version.
[3 of 5 Stars!]