Square Enix Announces Global 10th Anniversary Collaboration with Toby Fox’s Undertale
Celebrated RPG Undertale, developed by indie creator Toby Fox, is set to mark its 10th anniversary with a major collaboration announced by Square Enix.
The partnership will spotlight exclusive music and merchandise, commemorating a decade since Undertale first made waves in the gaming world.
Square Enix made the announcement on November 21, 2025, via its official social media channels, generating excitement among fans and industry insiders alike. Originally launched in September 2015, Undertale quickly developed a cult following thanks to its innovative gameplay, memorable soundtrack, and unconventional storytelling.
Developed primarily by Toby Fox, the title grew from its indie roots to become a multi-platform sensation, with notable launches on Nintendo Switch, PlayStation, Xbox, and PC, as well as repeated features in Nintendo Direct presentations.
According to available sales data, Undertale has sold over one million copies worldwide and remains a top download on the Nintendo eShop. The new collaboration brings together Square Enix’s SQEX Music & Merchandising division and Undertale’s creative team for a project intended to delight longtime fans.
While specific details about upcoming products remain under wraps, Square Enix confirmed that both music and exclusive merchandise will be central to the partnership.
The collaboration is intended for a worldwide audience, reflecting the game’s enduring global popularity. In an official statement, Square Enix described the project as something "a little strange, but somehow wonderful,” echoing the whimsical spirit of Undertale itself.
Toby Fox, creator of Undertale, expressed his enthusiasm about the partnership and the unique direction of the anniversary celebration, stating that mysterious new merchandise and freshly arranged music are planned, all set to recognize ten years of the game's "determination." Much of Undertale’s ongoing appeal is owed to its distinct musical identity, which has been performed in orchestral concerts and repeatedly praised by notable composers in the industry.
The upcoming SQEX Music & Merchandising initiative suggests fans can expect new interpretations and perhaps special collector’s editions tied to the 10th anniversary. The collaboration’s worldwide rollout underscores Undertale’s universal impact and Square Enix’s commitment to honoring significant milestones in gaming history.
Both companies encourage fans to stay tuned for further updates through official channels and social media as more details and product reveals are expected in the coming months. Undertale remains a touchstone in narrative-driven game design, and this joint celebration with Square Enix ensures the game’s legacy will continue to inspire new and existing players alike across the Nintendo Switch, eShop, and beyond.
The partnership will spotlight exclusive music and merchandise, commemorating a decade since Undertale first made waves in the gaming world.
Square Enix made the announcement on November 21, 2025, via its official social media channels, generating excitement among fans and industry insiders alike. Originally launched in September 2015, Undertale quickly developed a cult following thanks to its innovative gameplay, memorable soundtrack, and unconventional storytelling.
Developed primarily by Toby Fox, the title grew from its indie roots to become a multi-platform sensation, with notable launches on Nintendo Switch, PlayStation, Xbox, and PC, as well as repeated features in Nintendo Direct presentations.
According to available sales data, Undertale has sold over one million copies worldwide and remains a top download on the Nintendo eShop. The new collaboration brings together Square Enix’s SQEX Music & Merchandising division and Undertale’s creative team for a project intended to delight longtime fans.
While specific details about upcoming products remain under wraps, Square Enix confirmed that both music and exclusive merchandise will be central to the partnership.
The collaboration is intended for a worldwide audience, reflecting the game’s enduring global popularity. In an official statement, Square Enix described the project as something "a little strange, but somehow wonderful,” echoing the whimsical spirit of Undertale itself.
Toby Fox, creator of Undertale, expressed his enthusiasm about the partnership and the unique direction of the anniversary celebration, stating that mysterious new merchandise and freshly arranged music are planned, all set to recognize ten years of the game's "determination." Much of Undertale’s ongoing appeal is owed to its distinct musical identity, which has been performed in orchestral concerts and repeatedly praised by notable composers in the industry.
The upcoming SQEX Music & Merchandising initiative suggests fans can expect new interpretations and perhaps special collector’s editions tied to the 10th anniversary. The collaboration’s worldwide rollout underscores Undertale’s universal impact and Square Enix’s commitment to honoring significant milestones in gaming history.
Both companies encourage fans to stay tuned for further updates through official channels and social media as more details and product reveals are expected in the coming months. Undertale remains a touchstone in narrative-driven game design, and this joint celebration with Square Enix ensures the game’s legacy will continue to inspire new and existing players alike across the Nintendo Switch, eShop, and beyond.
