They are definitely Minecraft prose novels. I bought one for my son written by Max Brooks, the writer of World War Z. It's fine.
I also read a Resident Evil novel from the late 90s by SD Perry. It reads like a movie novelization. Perry wrote adaptations of all the games contemporaneously through Resident Evil 0, with original novels in-between each game. It was fine but over-explained puzzles from the game. They're still in print.