You’ve been invited to join Project Subtrahend. What could possibly go wrong?

…As it turns out, quite a lot!

In this choose-your-own-adventure visual novel, you’ll have the chance to get to know the stories, pasts, and personalities of nine peculiar characters after you've all been invited to help with an innocent social experiment. But things aren't all smooth sailing.

When things start going awry, and when the true intentions of the experiment are revealed, your choices will determine the possible endings you can get. It’s up to you who makes it out alive...

Project Subtrahend also explores what it means to be human, and the value of human life, through the backstories and political situations of certain characters.

With entertaining gameplay, secret endings, rewards for achievements, bonus scenes, and an hour of playtime in each route, you won’t be getting bored anytime soon as you discover everything Project Subtrahend has to offer!

[From Itch.io]