1 episode
First episode: E1
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Quick answers about this series, release status, and episode totals.
When did Undertale first air?
Undertale first aired on December 29, 2025.
How many seasons and episodes does Undertale have?
Undertale currently has 1 season and 1 episode.
When is the next episode of Undertale?
No official next-episode air date is listed for Undertale right now.