Indie-Pendence Trio is Undertale Trio Au (and One part of Undertale: Independence Comic) that crossover between three Indie Games, Undertale, Bendy Series, and Spooky's Jump Scare Mansion.

The project has some additions to

the character's abilities, storylines, and appearances that do not exist in the original game (Fanon) to make the story intensify and expand.

Undertale by Toby Fox
(Blue Archive by Nexon Games)

Bendy Series by Joey Drew Studio/Kindly Beast
(Doki Doki Literature Club by Dan Salvato)

Spooky's Jump Scare Mansion by Lag Studios
(Touhou Project by ZUN)

Crossover Trio by Seriyan_0910

Indie-Pendence Trio by EmptyAzurite