Undertale controversies
Controversies tied to this brand in public sources. A listing is not a finding of fault.
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2023
Public dispute over fan-work music licensing
A public exchange involving Undertale Yellow, Materia Music CEO Sebastian Wolff, and questions about permission to use Undertale music drew attention to the licensing difficulties surrounding fan projects. Toby Fox became involved and made a charitable donation connected to the dispute. The episode underscored tensions between broad fan creativity and formal commercial music rights.