Deltarune

Deltarune is an episodic role-playing video game in development by Toby Fox as a follow-up to his 2015 video game Undertale. In the game, the player controls a human teenager, Kris, who is destined to save the world together with Susie, a monster, and Ralsei, a prince from the Dark World. During their quest to seal the Dark Fountains prophesied to end the world, the group makes both friends and foes. The combat system is turn-based and uses bullet hell mechanics. Similarly to Undertale, enemy encounters can be resolved peacefully or through violence.

Development of Deltarune began in 2012, three years before Fox's previous game, Undertale, was released. Though it shares some characters with Undertale and features similar gameplay, it takes place in a separate setting and uses an overhauled battle system with multiple party members. The game's story is divided into multiple chapters that have been released gradually; Chapters 1 and 2 were released for free in October 2018 and September 2021 respectively, Chapters 3 and 4 were released as a paid title in June 2025, and Chapter 5 is set to release as a free update to the paid release in 2026. The game appears to have seven chapters, as indicated by the menu listing that many. Initially, the game was released on macOS and Windows, before being ported to the Nintendo Switch and PlayStation 4 in 2019, and the Nintendo Switch 2 and PlayStation 5 in 2025. The released chapters have been largely praised by critics for their soundtrack, narrative, and sense of humor.