A Twisted Discovery (ATD) is a storytelling which takes place after the Good Ending of Slendytubbies 3. It was released on DeviantArt in 2020. It features head-canon interpretation of what happens after said ending, a brief mention of the deal with the Tubby Custard infection, and a new adventure. These events take place in an alternate universe almost identical to the original one. Most of its content is the author's own take on the original lore, and as such, nothing in it should be considered as relevant. As ATD is a part of the larger, complete story that is still in progress, some minor details may be subject to change.