Toby Fox Explains Lack of Undertale and Deltarune Translations Beyond Japanese

Toby Fox, the acclaimed developer behind indie sensations Undertale and Deltarune, has provided new insight into why his popular games offer limited regional language support despite a devoted global fanbase.

Both Undertale and its spiritual successor Deltarune have achieved critical and commercial success on platforms such as Nintendo Switch, but official translations remain restricted to English and Japanese.

Initially, Undertale launched in English only, with Fox later collaborating with translator Keiko Fuchicho and the specialist localization team at 8-4 to bring a Japanese version to players.

This approach was mirrored for Deltarune’s current releases.

The absence of more languages has generated frustration among international fans, particularly in regions such as Latin America, where demand for Spanish and Brazilian Portuguese versions is high.

Recently, Fox used social media to address concerns following feedback tied to the Japanese launch of another indie game, Off.

In a measured response, Fox clarified that official translations are not being withheld out of disregard for other communities.

Instead, he emphasized the importance of maintaining creative control and delivering translations that match his vision for the game.

As Fox put it, he was able to ensure high quality for the Japanese version because he understands the language and could work closely with the translation team, something not feasible for additional languages at this time.

For Deltarune, additional localization is further complicated by ongoing development constraints.

Fox indicated that expanding language support would significantly delay the release of forthcoming content, making it unviable for now.

He expressed regret for disappointing fans but reaffirmed his appreciation for their support worldwide, including those in Latin America.

While there have been unofficial fan translations available on PC, Fox stated he is grateful for these community efforts, noting that allowing fans to interpret the game without the obligation of official perfection is helpful, especially when he cannot personally verify translations in languages he does not speak.

Past discussions with publisher 8-4 about expanding localizations have not borne fruit, but Fox remains open to exploring new strategies in the future.

As of now, Undertale and Deltarune are both available to purchase and play on the Nintendo eShop for Nintendo Switch, and continue to enjoy enduring popularity across the globe.

While prospects for more official translations remain uncertain, Fox’s commitment to quality and authentic localization ensures that any future releases will aim to meet the high standards set by the original games.