Undertale
undertale.com
RPG where players can befriend or spare every monster instead of fighting, known for its humour and soundtrack.
Toby Fox
Creator and composer of Undertale and Deltarune
About Toby Fox
Toby Fox is an American game developer and composer from Manchester, New Hampshire, best known for Undertale and Deltarune. He got his start making EarthBound ROM hacks as a teenager and composing music for the webcomic Homestuck, and conceived Undertale while studying at Northeastern University in Boston.
In 2013 he ran a Kickstarter for Undertale with a $5,000 goal and raised more than $51,000. Released in September 2015, the game was made almost entirely by Fox, with Temmie Chang as lead artist, and became a cultural phenomenon thanks to its humour, memorable soundtrack and system that lets players spare every enemy. It sold over a million copies within months of launch.
Since 2018 he has been releasing Deltarune, a parallel story told in chapters, with a small team. Chapters 3 and 4 launched together as a paid release in June 2025. Alongside his own games, Fox has contributed music to Pokémon Sword and Shield and Pokémon Scarlet and Violet, and Undertale's 10th-anniversary charity livestream in 2025 raised more than $360,000 for Médecins Sans Frontières.
Products by Toby Fox
Deltarune
deltarune.com
Chapter-based RPG set in a parallel world to Undertale, released episodically since 2018.
- First product
- Funding
- Launch / milestone
- Started 2013
- 2013Funding: Raised $51K on Kickstarter for Undertale
- 2015First product: Released Undertale, which sold over a million copies within…
- 2018Launch: Released Deltarune Chapter 1 for free
- 2021Launch: Released Deltarune Chapter 2
- 2025Launch: Launched Deltarune Chapters 3 and 4 as a paid release and…
Timeline
- 2013 — Raised $51,124 on Kickstarter for Undertale against a $5,000 goal.
- 2015 — Released Undertale, which sold over a million copies within months.
- 2018 — Released Deltarune Chapter 1 for free.
- 2021 — Released Deltarune Chapter 2.
- 2025 — Launched Deltarune Chapters 3 and 4 as a paid release and held a 10th-anniversary charity stream for Undertale.
How Toby builds
- Subvert genre conventions to give players meaningful choices.
- Treat music as a core part of the game's identity.
- Keep the team tiny and take as long as the game needs.
Toby Fox FAQ
Who made Undertale?
Undertale was created by Toby Fox, who handled design, programming, writing and music, with Temmie Chang as lead artist. It was released in September 2015.
How was Undertale funded?
Toby Fox raised $51,124 from 2,398 backers on Kickstarter in 2013, far exceeding his $5,000 goal.
Is Deltarune finished?
Deltarune is being released in chapters; Chapters 3 and 4 came out in June 2025, with further chapters planned.
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