Battle for BFDI Survive AU was a Wattpad fanfiction written by ClownTownUSA between around 2019 and 2021. In around 2022, it was mysteriously deleted, and no archives can be found on the Wayback Machine. If I recall correctly, the plot revolved around the disappearance of the hosts, Four and X, and the ensuing struggle of the BFB cast to survive the resulting anarchy. As this was the first BFDI fanfiction I ever read, it holds a special place in my heart. The cover art for the fanfiction can still be found in ClownTownUSA's Object Show Art Book (https://www.wattpad.com/story/153300490-object-art-%E2%80%A2), although the story itself is no longer available. Unfortunately, the reason for its deletion remains unknown.