Well, he is now! We've just finished listening to the first story (also reading several chapters in the kindle version) and have started in on the second, Zurück in die Würfelwelt.
J loves the story. It is suspenseful and well-told, and the quality of the German is high. From an L2 perspective it is very valuable; since J knows the videogame well, which is richly described in the book, he can visualize everything, picking up an enormous amount of vocabulary as he does so.
Another L2 multiplier is that Gronkh, a well-known German YouTube artist of "Let's Play" whose Mincraft-videos J knows, is a character in the novel. So J has gone back and watched many of those old videos. In the last couple of days, I've noticed that when J has been playing Minecraft, he seems to be trying to imitate a Let's Play video by keeping up a constant stream of game-chat—in German!
