¡Disclaimer! Only 2 gamebooks are currently in english. Most of them are in spanish. If you want to create a gamebook in english I advice to go to bookgame.me.
From this app you can read a multitude of books style Choose Your Own Adventure but with the addition of playing with a character as RPG games.
You will find books of all styles: Middle Earth, magic, vampires, fantasy, medieval, zombies, Lovecraft, etc. and different genres like adventure, romantic, horror, political and other gamebooks.
You can create your character, improve your skills, level up, get weapons, magic items, shields, armors, potions, perform spells, etc.
You will have to continually choose the paths you want to travel.
Each book has a multitude of different paths, and a multitude of endings to choose from.
You can save the game in case you choose the wrong path and you want to start over from the save point.
Each book game is an authentic adventure.
The books you can read are created from the free web application https://bookgame.me. You can register and write your own games, which when published, will be automatically incorporated into the app.