Undertale v1.00

Undertale v1.00 Undertale v1.00 Undertale v1.00 was the first complete version of UNDERTALE that was released on September 15, 2015. Undertale v1.001 For images showing the changes, see here. Toby Fox first announced Undertale v1.001 on January 12, 2016.[1] Beta testing for Undertale v1.001 began on January 19, 2016, and was only available for those with the Steam version of Undertale.[2] This version of Undertale was later deemed official on January 20, 2016[3], and was later made available for those who bought the DRM-free version of Undertale on January 21, 2016

Undertale v1.001v1

This update was issued on March 8, 2016, and comes with an update to the steam_api.dll to ensure Undertale works with the latest Steam client update

Undertale v1.05

This update on Steam has been announced on Twitter on August 21, 2017, and it mainly adds Japanese language support
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