Deltarune is a role-playing video game created by American indie developer Toby Fox. The player controls a human, Kris, in a world where monsters live on the surface of the Earth. Kris and a classmate named Susie fall from Earth into a place called the “Dark World” where they meet Ralsei, who tells them that they are heroes destined to restore balance to the world. The players meet various beings who call themselves "Darkners" during a quest to seal the dark fountain. Mainly through the combat system, the player encounters multiple enemies who attack with a bullet hell system, which can be resolved peacefully or by fighting them. The first chapter of the game was released on October 31, 2018 for Microsoft Windows and macOS for free, with a later Nintendo Switch release on February 28, 2019, with a PlayStation 4 port also in the works. The game's graphics are similar to 16-bit Japanese role-playing games such as "EarthBound, " and "Chrono Trigger".