Toby Fox

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Toby Fox
Born (1991-10-11) October 11, 1991 (age 27)
Years active2008–present
Known forUndertale

Toby Fox (born October 11, 1991) is an American video game developer and composer. He is best known for developing the critically acclaimed video game Undertale, released in September 2015. He also developed a related game called Deltarune, the first chapter of which was released on October 31, 2018 for free as a “survey”.[1] He has composed various pieces of music for the webcomic Homestuck.


Fox studied at Northeastern University in Boston, Massachusetts, studying environmental science.[2] Fox started composing a variety of music for Andrew Hussie's 2009 webcomic Homestuck during his senior year of high school. Fox initially did not respond when Hussie started a "Music Contribution Team" in April 2009 and put up a news post asking musicians to participate. However, Hussie took note of his work when Fox started uploading piano covers of the webcomic's music on the MS Paint Adventures forums.[3] Fox also co-composed the music for the 2017 Homestuck video game Hiveswap.[4]


Fox's most popular work is the 2015 role-playing video game Undertale, which sold more than a million copies,[5] becoming a "breakout hit" and "pop-culture phenomenon".[6] Fox worked on the entire game independently, besides the art assets; which he had asked Temmie Chang for help with, he decided to work independently to avoid relying on others.[7] Fox had little game development experience before Undertale, using RPG Maker 2000 with his three brothers to make role-playing games along with making some EarthBound ROM hacks in high school,[8] the most notable of which being Earthbound: The Halloween Hack.[9] He thought of the character designs and ideas for Undertale in college, where he drew them in his notebook.[10]

Following its release, the game garnered an extensive fanbase and a large degree of controversy over the praise garnered by the game.[11] Fox commented that he did not mind if people stated that they did not like the game, saying that it was "not for everyone".[11] Despite Undertale's awards and widespread acclaim, Fox wrote that his personal opinion was that the game was still "niche" and deserved an "8/10" review score.[12]

In 2016, Fox released a number of unused musical tracks from Undertale.[13] He also became a contributor to the A Profound Waste of Time magazine.[14] More recently,[when?] Fox was chosen to be part of the 2018 Games Forbes 30 Under 30 list for his role in creating Undertale.[15]


On October 30, 2018, Fox tweeted a request for fans of Undertale to check the game's official Twitter account after 24 hours. The following day, Fox released the first chapter of the followup to Undertale, named Deltarune.[16][17] On November 1, Fox shared more details regarding the game including that the rest of the chapters were expected to release simultaneously but work had not yet started and there was no estimated timeframe for completion.[18] Fox also stated that he had been working on the project since 2012 and that the idea for Deltarune developed from Undertale during production.[18][19]


  1. ^ Oxford, Nadia. "Does It Hold Up? Undertale". USgamer. Archived from the original on August 3, 2017. Retrieved August 2, 2017.
  2. ^ Dines, Jennifer (September 11, 2012). "CHANGE AGENCY: 826 BOSTON, EGLESTON SQUARE'S INSPIRATION CENTER". literacychange.
  3. ^ Funk, John (October 15, 2012). "Land of Memes and Trolls: The Epic and Ridiculous Self-Aware World of Homestuck". Polygon. Vox Media. Archived from the original on May 20, 2016.
  4. ^ Horti, Samuel (September 3, 2017). "Act 1 of Homestuck adventure game Hiveswap coming out this month". PC Gamer. Archived from the original on September 5, 2017.
  5. ^ Grubb, Jeff (April 13, 2016). "Stardew Valley is one of the best-selling PC games of the year as it surpasses 1M copies sold". GamesBeat. VentureBeat. Archived from the original on April 22, 2016. Retrieved April 22, 2016.
  6. ^ Wawro, Alex. "Undertale dev reflects on what it's like to have your game become a phenomenon". Gamasutra. Archived from the original on August 3, 2017. Retrieved August 2, 2017.
  7. ^ Turi, Tim (October 15, 2015). "GI Show – Yoshi's Woolly World, Star Wars: Battlefront, Undertale's Toby Fox". Game Informer. GameStop. Archived from the original on January 20, 2016. Retrieved January 20, 2016.
  8. ^ Han Tani, Sean (May 25, 2013). "Toby Fox's Undertale – DEV 2 DEV INTERVIEW #1". ambient-melodic. Archived from the original on September 13, 2017. Retrieved January 20, 2016.
  9. ^ "Earthbound (The Halloween Hack) – Hardcore Gaming 101". Retrieved 2018-11-04.
  10. ^ Alexandra, Heather. "Undertale Creator Shares Notebook Full Of Early Concepts And Art". Kotaku. Archived from the original on August 3, 2017. Retrieved August 2, 2017.
  11. ^ a b Grayson, Nathan. "Undertale Creator: It's OK If People Dislike The Game". Steamed. Archived from the original on August 3, 2017. Retrieved August 2, 2017.
  12. ^ O'Connor, Alice (September 15, 2016). "8/10: Undertale Dev Reflects On Unexpected Popularity". Rock, Paper, Shotgun. Archived from the original on August 3, 2017. Retrieved August 2, 2017.
  13. ^ O'Brien, Lucy (September 15, 2016). "Undertale Creator Releases Unused Music to Celebrate 1-Year Anniversary". IGN. Archived from the original on August 3, 2017. Retrieved August 2, 2017.
  14. ^ "Ashly Burch, Toby Fox and Mike Z join the Profound Waste of Time team". Destructoid. Archived from the original on May 27, 2017. Retrieved August 2, 2017.
  15. ^ "Toby Fox". Forbes. Retrieved December 3, 2017.
  16. ^ "Undertale creator's new game is Deltarune, a mysterious surprise". Polygon. Retrieved 2018-11-01.
  17. ^ "Deltarune Chapter 1 is the free and surprising start of a new Undertale saga". Rock Paper Shotgun. Retrieved 2018-11-01.
  18. ^ a b "Deltarune creator Toby Fox talks full release plans, upscaling". App Trigger. 2018-11-01. Retrieved 2018-11-13.
  19. ^ "tobyfox on Twitter". Twitter. Retrieved 2018-11-13.