Toby Fox has been played on NTS in shows including samb_rules, featured first on 30 March 2016. Songs played include Weird Birds, Mysterious Place and Good Night.

Toby Fox is the developer and composer behind the 2015 hit indie video game Undertale.

In 2018, he released chapter 1 of a new game titled Deltarune, which he also composed the music for. Chapter 2 was released in 2021.

Fox has also composed music for Homestuck under the alias Radiation.