Toby Fox has given us a new game after Undertale, and with this book I've created let's solve its mysteries together. Theories here, theories there, any more theories over there? "Don't forget. . ." Drum roll please! Let's give it up for. . . The theorizers! Let's unveil the hidden truth of Deltarune, together with Undertale. Undertale & Deltarune fans unite! Now, do you want to share theories with us? Current theorizers; @Queenly_JD @8Lol7XP