ReformedSYSTEM

ReformedSYSTEM is a Self-Insert Operating System|self-insert operating system made by ReformedOSM. Their first version were released on 2023.

Mockup Development History

ReformedOSM's Self-Insert Operating System, ReformedSYSTEM is known to be tied to Fjattar's "UNDERTALE 2014 Fan" hate channel which primarily consists of Undertale/Deltarune fandom-related videos with simple geometric shapes, ReformedSYSTEM or KrisKre_OS boot screens, and other random images such as a rubber duck plastered over them with loud abrupt sound effects. ReformedSYSTEM History MKI video was teased on September 8th, 2024. The video was uploaded on October 15th, 2024, but some of ReformedSYSTEM mockups used before the full ReformedSYSTEM History MKI video was included for some circumstances, for example ReformedSYSTEM mockups has been used on Fjattar's "UNDERTALE 2014 Fan" hate channel which those are put on Undertale/Deltarune fandom-related videos. On the AN&F Ruined Doc #1, on the conclusion part, it included a reference to ReformedSYSTEM History MKI video release date.