UNDERTALE MUSEUM is a traveling UNDERTALE exhibition running in Tokyo from February 19 to March 10, 2027, and in Osaka from April 22 to May 9, 2027. An advance lottery for Tokyo tickets opened September 4 and closed September 14, 2026, and a September 12 area map shows the venue's route through locations including the Ruins and Toriel's House.
The museum is an official exhibition built around Toby Fox's RPG UNDERTALE, described as the first large-scale exhibition for the game. Its supervising developer Toby Fox is directly involved in shaping the event, including donating dog fur that will be part of it. Temmie Chang drew a key visual for the exhibition, revealed on September 3, 2026.
The venues are fixed. The Tokyo run is at Ikebukuro Sunshine City Exhibition Hall A from February 19 to March 10, 2027. The Osaka run is at Osaka Nanko ATC Gallery from April 22 to May 9, 2027. Tokyo ticket prices are 2,500 yen for adults and 2,000 yen for elementary school students, with a bonus set including a pin and a koban-style amulet at 5,500 yen for adults and 5,000 yen for elementary school students. Preschool children get in free. The Tokyo advance lottery opened September 4 at 12:00 and closed September 14 at 11:59, with winners announced starting September 30 at 13:00. Entry uses a date-and-time reservation system and slots are capped, so tickets may sell out.
On September 12, 2026, the museum's official X account posted an area map of the venue. The layout starts at an opening and moves through game locations including the Ruins and Toriel's House, with exhibits tied to each area. The map arrived while the Tokyo lottery was still open, and it is the most recent look at how the exhibition is organized.
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The official X account for UNDERTALE MUSEUM posted a simple area map of the venue on September 12. The layout starts at an opening and moves through game locations including the Ruins and Toriel's House, with exhibits tied to each area. The exhibition runs in Tokyo from February 19 to March 10, 2027, and in Osaka from April 22 to May 9, 2027.
The UNDERTALE MUSEUM Executive Committee updated the event's official website on September 3, 2026, revealing a key visual drawn specifically for the exhibition by Temmie Chang. The museum is billed as the first large-scale exhibition for Toby Fox's RPG UNDERTALE, and it will run at Ikebukuro Sunshine City Exhibition Hall A in Tokyo from February 19 to March 10, 2027, then at Osaka Nanko ATC Gallery from April 22 to May 9, 2027. Alongside the artwork, the committee released ticket details for the Tokyo venue. Advance admission tickets cost 2,500 yen for adults and 2,000 yen for elementary school students; tickets that include a bonus set of a pin and koban-style amulet are 5,500 yen for adults and 5,000 yen for elementary school students, with preschool children admitted free. An advance lottery for Tokyo tickets opens September 4 at 12:00 and closes September 14 at 11:59, with winners announced starting September 30 at 13:00. The event will partially use a date-and-time reservation system, and entry slots are capped, so tickets may sell out.