MINDFUNK In 13 Days is a short psychological horror visual novel about trust and control.

MINDFUNK, a cringeworthy soft drink Nari bought on a whim at a reject shop...

Sena can't contain her laughter seeing Nari drink it. He says it tastes exactly how it looks... which gives him a genius idea.

What makes it taste so... weird?

Nari and Sena are lab partners, so Nari decides to investigate what gives MINDFUNK its "unique" taste... What they discover is something they thought was impossible. MINDFUNK vapors produce messages about the future.

MINDFUNK predicts that one of them will die in 13 days.

...This isn't a joke anymore? The wacky drink is saying that one of them only has 13 days left?

Help Nari and Sena escape the grip of MINDFUNK.

...Or don’t. It's up to you to decide how to guide Nari and Sena as they deal with a fortune-telling drink from the past.

[From Itch.io]