An ominous "survey program" released by Toby Fox on 31 October 2018, which turned out to be Chapter 1 of Deltarune, a role-playing game "intended for people who have completed Undertale". With the free release of Chapter 2 on 17 September 2021, this original SURVEY_PROGRAM demo has been removed from the Deltarune website, as Chapter 1 is included with the Chapter 2 release.
Available in English and Japanese, for Windows and MacOS.
Please read the information below before downloading the program.
There may be moving or flashing imagery.
Windows Users may have to get past SmartScreen to use the program.
* This is intended for people who have completed UNDERTALE