This World of Infinite Choices
Most mods install on top of a fresh copy of DDLC, free from ddlc.moe. Follow the author's instructions, and keep a clean copy of the game.
About this mod
Monika is gone. Sayori takes up the mantel of Club President, but no one else around her understands what she is going through, or remembers what happened before.
Full credits
Wilinisian, FiTMarshmellow, Various Artists