Buy Project Subtrahend PC Key

Join an innocent social experiment in this indie casual visual novel inspired by the trolley problem. Players meet nine unique characters, uncover their backgrounds, personalities, and bonds, and delve into the politics of their world, including the emerging religion Sicknessism. Thought-provoking choices shape escapes when chaos strikes, deciding who survives amid deep human themes. Core gameplay centers on building relationships-befriending or clashing with characters-through branching paths that last about an hour each. Unlock secret endings and achievements for extra scrapbook content and post-game scenes. Casual players who enjoy impactful decisions and character-driven stories find a compact, replayable experience on PC.

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

Inspired by the trolley problem, this thought-provoking choose-your-own-adventure visual novel gives YOU control over who lives and dies. You have the chance to get to know the stories, pasts, and personalities of nine unique characters after you've all been invited to help with an innocent social experiment. Explore the deep interpersonal relationships between them, learn about the politics of their world, and explore what it means to be human.

Don't get too attached... when things start going awry, you choose how to escape and who makes it out alive!

With a lore-filled world, tons of choices, 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!

make Impactful Choices

When the time comes, you choose how to escape and who survives, but it won't be easy.

Befriend (or be-enemy) nine vastly different characters. [\h2]
Get to know their diverse life experiences, perspectives, and relationships.

learn About Sicknessism

A new religion has emerged in New Evenfall; you have the chance to learn about it, and maybe even join in ;)

earn Extra Content

Unlock achievements to fill out each character’s scrapbook and unlock bonus post-game scenes with each character!