'UNDERTALE: The Determination Symphony in Seoul,' a concert featuring the music of the beloved masterpiece 'UNDERTALE'—a game cherished by fans far beyond the indie scene—will take place in Korea this October. The performance is scheduled for October 9 at 7:30 PM at the Grand Peace Palace of Kyung Hee University. The concert will run for 150 minutes, including a 20-minute intermission, and is open to audiences aged 12 and older.

'The Determination Symphony' is the first official world tour for 'UNDERTALE,' which began in 2026 and features stops in major cities across North America, Asia, and Europe. The concert features orchestral arrangements of music by the game's creator and composer, Toby Fox. Throughout the performance, gameplay footage and key scenes are projected on a screen above the stage, allowing the audience to follow the game's story through its music.

Released in 2015, 'UNDERTALE' is a RPG created by a single developer, Toby Fox, that subverts the traditional RPG formula of having to defeat every enemy. Players take on the role of a human who has fallen into the underground world, where they encounter various monsters and can choose a 'pacifist route,' resolving conflicts through dialogue and actions rather than combat. With its unique systems, distinct characters, and moving story, it has established itself as one of the most iconic indie games. Since its release, it has been ported to various platforms, including PC, Nintendo Switch, PlayStation, and Xbox, selling millions of copies worldwide.

'UNDERTALE' is as highly regarded for its music as it is for its gameplay. The original soundtrack, consisting of over 100 tracks composed by Toby Fox, captures the distinct personality of every character and region. Tracks such as 'Megalovania,' 'Hopes and Dreams,' 'His Theme,' 'Battle Against a True Hero,' and 'Spider Dance' remain some of the most iconic pieces in game music history. The composer's signature style—using variations of the same melodies to convey narrative and emotion—is considered a hallmark of the work.

The Seoul performance will feature orchestral arrangements of the game's representative tracks, structured to follow the journey through major regions such as 'Ruins,' 'Snowdin,' 'Waterfall,' 'Hotland,' and 'New Home.' The concert will be conducted by Thanapol Setabrahmana and performed by the Metropolitan Festival Orchestra. Official world tour merchandise will also be available for purchase at the venue.