Parasite Days: Survival Sim

合同会社ズィーマ

Contains adsIn-app purchases

About this game

"Good morning, Hostbody!"

In a not-so-distant future, the world is dying.
You wake up to find a strange but cute creature growing from your arm.
It is a parasite — one that drains its host's vitality.

Do you purge it... or will it purge you first?

The world's first parasite-raising survival adventure.

■ Features

[1] Supply management is your lifeline
Each day, choose supplies (food, items, medicine) to keep your immune system strong.
Survive the sudden "absorption seizures" with smart decisions.

[2] Food combos trigger chemical reactions
Mix and match supplies to discover powerful effects.
Experiment to find your own winning combinations.

[3] Your choices change everything
Multiple endings based on how you treat the parasite and the people of a dying world.
Happy endings, bad endings — find the one that's yours.

[4] Charming pixel art and a bittersweet world
Retro pixel art paired with an atmospheric soundtrack.
Cute, lonely, and a little heartbreaking — everyday life at the end of the world.

[5] Simple controls anyone can enjoy
No difficult action required.
Tap-only mini-games with no stamina or timers.
Play at your own pace.

■ Great for players who love
- Pixel art / retro indie games
- Dystopian sci-fi and post-apocalyptic stories
- Story-driven games with multiple endings
- Relaxed simulation and management gameplay

■ Notes
- Fully playable to the end for free (ads are shown).
- No story connection to previous titles.
- Includes both happy and bad endings.

Cute, terrifying, and a little heartbreaking.
Step into the story of a limbless parasite and its Hostbody in a dying world.

Ratings and reviews

a very cute game! The limited characters are well developed, and it is fun to try out new combos! A tip, btw: keep an eye on the yellow bar. If you hit 0% or 100%, the game automatically ends. Keep this bar in the middle to play for a longer duration for your run.

very interesting! i don't have the patience to go through and try to get a bunch of endings, but for the time i played this was a very interesting and unique game. the art style is nice, and it's fairly easy to understand what to do. i know tons of ads tend to be a problem in mobile games these days, but i don't think the ones in this one are overbearing. plus, i kind of like the way they announce an ad is about to start. definitely recommend.

I've played this game for two days straight and I can confidently say this is by far my favorite mobile game I've ever played. The writing and characters is done so well that it really is hard to stop playing, it makes you want to see every dialogue option, every ending and just explore every aspect of the game. Not only is the writing good, but the concept of this game in and of itself is very unique. After getting the true ending I am very glad I've spent my time on this parasite :) 11/10

What’s new

Updated the app to meet the latest Google Play requirements.
Updated the advertising SDK.