Toby Fox
American video game designer and composer (born 1991)

Robert F. "Toby" Fox (born October 11, 1991) is an American indie game developer and composer. He is best known for creating and scoring the 2015 role-playing video game (RPG) Undertale, which he developed almost entirely by himself and is ranked by numerous publications as one of the greatest video games, and Deltarune, a parallel story to Undertale released in chapters since 2018.
Born in Manchester, New Hampshire, Fox was significantly influenced by the RPG EarthBound during his childhood, and used RPG Maker to create games with his brothers. Inspired by Starmen.net, an EarthBound fan site, Fox began creating ROM hacks of EarthBound under the username Radiation, releasing the EarthBound Halloween Hack in 2008. Largely a self-taught musician, Fox began relearning the piano during middle school to play video game music, and later joined the music team for Homestuck, a webcomic by Andrew Hussie.
During his time at Northeastern University in Boston, Fox conceived Undertale and Deltarune, and successfully raised funds for the former's development through Kickstarter. Fox continued developing Undertale until its release two years later while conceiving Deltarune, with five of its planned seven chapters released as of September 2026. He has composed music for various indie games and musicians, as well as the Pokémon franchise, and became involved with the Japanese game industry through connections with developers. Fox has also launched charity fundraisers related to his games.
Early life
Robert F. Fox was born on October 11, 1991, in Manchester, New Hampshire, the third of four brothers.
“Toby Fox” enters the record as american video game designer and composer (born 1991). Crown Archives preserves that source wording while asking what Toby, American and video can confirm, complicate or overturn.
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“Toby Fox” is worth following because a concise public description often conceals a longer documentary argument. Here, Toby, American and video provides the most credible route into that argument.
The entry’s evidential value lies in the named roles, institutions and publications that can be tested against primary documentation. The source revision retrieved here is dated Sep 26, 2026. The linked authority identifier is Q23919389. VIAF identifies the subject as 2758164423037720530002. The Library of Congress control number is no2025033727. 3 of 4 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 1991, 2015, 2018 and 2008.
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This entry incorporates text from “Toby Fox” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.