'UNDERTALE: The Determination Symphony in Seoul,' a concert featuring orchestral arrangements of music from the masterpiece 'UNDERTALE'—a game beloved 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 total runtime is 150 minutes, including a 20-minute intermission, and the event is open to those 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 performances of music newly arranged from the original score by creator and composer Toby Fox. Throughout the show, 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 narrative, the game has established itself as a landmark title in the indie genre. Since its release, it has been ported to various platforms including PC, Nintendo Switch, PlayStation, and Xbox, recording millions of copies sold.

'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 iconic staples of game music. The composer's signature technique of using variations of the same melody to convey different narrative beats and emotions is also considered a hallmark of the work.

The Seoul performance will feature orchestral arrangements of representative tracks, structured to follow the game's major regions, including '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.