Deltarune

Deltarune is an episodic role-playing video game created by American indie developer Toby Fox. Set in a parallel universe to his 2015 game Undertale, it follows Kris, a human teenager predetermined to save the world alongside Susie, a monster, and Ralsei, a prince from the Dark World. Throughout the story, the party establishes relationships with a variety of allies and opponents. The combat system is turn-based and uses bullet hell mechanics. Like in Undertale, enemy encounters can be resolved peacefully or through violence. The game shares several characters and gameplay elements with Undertale, but takes place in a separate setting and features an overhauled battle system with multiple party members. The inspiration for Deltarune came to Fox in a fever dream in 2011. Development initially began in 2012, but was abandoned before Fox created the first room. Temmie Chang, who had assisted with character art in Undertale, serves as the main artist. After the release of the first chapter, Fox expanded the team to assist with development. The first two chapters were released as free demos in 2018 and 2021 respectively, while the third and fourth chapters were made available in 2025 with the game's paid release. The fifth chapter was released as a free update in June 2026, with the sixth planned for 2027 and a seventh planned for a later release. Initially released for macOS and Windows, it was later ported to the Nintendo Switch and PlayStation 4 in 2019, followed by the Nintendo Switch 2 and PlayStation 5 in 2025. The game has been praised by critics for its soundtrack, characters, narrative, and sense of humor.