The True Reality
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
It's the year 2022. Technology has advanced so much that entering video games is a thing of the past. You are working on an project when something odd comes. Monika. Join her as you venture out of Hilfigerer to DDLC to stop a hidden entity from hurting the rest of the girls. However, since it's been 5 years since you played the game...what do you remember?