Everyone can achieve greatness if they put in the effort! Undertale, created by Toby Fox, has become a true phenomenon in the world of video games—and describing it in words is hard. It’s a minimalist game that tells a touching story of the underground world populated by amazing monsters the player encounters. By controlling the main character, the gamer decides the fate of those they meet: destroy them or show mercy? But how did this game win the hearts of so many fans around the world, and how did its creator become a universal favorite whose behind-the-scenes notes are discussed with special attention? Corentin Benoit-Guyenne explored this phenomenon and revealed the backstage details of how Undertale was made: Who is Toby Fox? Which games influenced Undertale’s creation? What secrets are hidden in the game’s music?