These are the real books by Cube Kid! Diary of an 8-Bit Warrior: From Seeds to Swords was originally published as Wimpy Villager Kindles 5-8. 

Pet slimes. A potion brew-off. A creepy forest that no one will explain. What’s a twelve-year-old warrior-in-training to do? As Runt and his friends continue their battle preparation, they face their biggest challenges yet—and it’s not just those zombies decked out in body armour (which is really  weird, by the way). Runt’s got a brand new nemesis who will stop at nothing to claim the top spot in the warrior competition at school. And, to make matters worse, there’s a strange girl following him around wherever he goes. But old enemies will become new allies as the town rallies to save the school from a series of mysterious mob attacks. Can Runt and his friends take down the biggest, baddest boss mob yet? The adventures continue in this second installment of the unofficial Minecraft diary series by Cube Kid.