Toby Fox officially announces the development of Deltarune, a follow-up to Undertale.
The first chapter of Deltarune is released as a free demo for Windows and macOS.
The second chapter of Deltarune is released as a free update, continuing the story and gameplay.
A mysterious Dark World is created, existing alongside the Light World, home to the game's main characters and events.
Kris, the protagonist, is born and begins life as a normal human child attending school alongside Susie and other classmates in the Light World.
Ralsei, a prince from the Dark World, appears and allies with Kris and Susie to save the world.
Kris and Susie discover the path to the Dark World by falling into their classroom computer, initiating their adventure.
The party is formed as Ralsei joins Kris and Susie to confront the challenges of the Dark World.
The party faces the Dark World's 'King,' working to restore balance and prevent chaos in both worlds.
After defeating major threats, Kris and Susie return to the Light World, setting up mysteries for future story development.
