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HYNPYTOL

Screenshots

HYNPYTOL screenshot 1
HYNPYTOL Trailer (ENG) trailerWatch trailer on Steam ↗

HYNPYTOL

base0 · Published by base0

Very Positive — 99% positive (91 reviews) · 23 achievements

Last updated 27 Sept 2026

They're coming. There's no hope. Still, you're a HYNPYTOL.

DJCTQ 61 DLC available ↗Steam WorkshopFull Controller Support

£12.79

Lowest price we've ever recorded

View on Steam

Prices can lag the live Steam store — always confirm before buying.

Price history

3 Sept 2026Lowest: £12.79 · Highest: £12.799 Oct 2026

Action, Adventure, Indie · 2023 · More £5 - £15 games

Escape the endless horde as you navigate treacherous environments in HYNPYTOL. Developed by base0, this intense action-adventure challenges you with every step forward being a fight for survival.

About this game

HYNPYTOL ([heen-pee-tol] meaning "white blood cell" in Korean) is a retro-themed puzzle action adventure game.

Embark on a journey to save a crumbling immune system as a chosen "Killer T", guided by a rather grumpy "Dendritic".

A simple yet versatile "high-five" action

In this perilous world, all that the "Killer T" can do is "high-five".

Learn to use your hand for everything: from moving around and talking to other cells, to overcoming obstacles and taking care of infection!

A reimagniation of the 90's visuals and sounds

HYNPYTOL is inspired by the pixel graphics and sounds of 90's games, and reimagines them with a modern touch for a unique charm.

Immerse yourself in this nostalgic world; you may also find some easter eggs along the way!

The immune system: separating "you" from "us"

Explore the human body and the various mechanisms of the immune system.

Learn all about your friends and enemies in the immunopedia!

System Requirements

Will my PC run this? →

Minimum

Minimum:
  • OS *: Window 7 or later
  • Processor: Intel Core 2 Duo 2.1 ghz or equivalent
  • Memory: 2 GB RAM
  • Graphics: 2nd Generation Intel Core HD Graphics (2000/3000), 512MB
  • DirectX: Version 9.0
  • Storage: 2 GB available space

Supported Languages

English, Korean, Japanese, Simplified Chinese, Traditional Chinese, German

Latest news

  • Patch NotesOfficial

    Update Notes For 25.01.18 (v1.5.3)

    Fixed an issue where the Filtration Membrane Codex was not unlocking. The Codex can now be unlocked at the entrance of the Filtration Membrane area. Resolved a bug where controls would freeze after clearing a level in the Workshop mode and then continuing to play. Fixed an issue where the background music (BGM) of the Immune System Codex would not change properly when starting the game via Chapter Selection. Slight improvements have been made to the structure of the Thymus. Improved German UI text. Improved English UI text.
    Read full article on Community Announcements (base0)
  • Patch NotesOfficial

    HYNPYTOL 1.5 Update: Dive deep into HYNPYTOL’s world with the Immunopedia!

    Hello everyone! To celebrate HYNPYTOL's release on Nintendo Switch, the major 1.5 patch has been implemented! Various content, features, and quality-of-life improvements have been added. Additionally, the trailer has been updated! Here are the details: The ‘Immunopedia’ has been newly added. Discover the characteristics and stories of various immune friends! {STEAM_CLAN_IMAGE}/44481491/30f0f2879ac8b4cc839783a26d4d4aa7580b8473.png New visual effects have been added. Experience the displays of old-school gaming consoles and CRT monitors! {STEAM_CLAN_IMAGE}/44481491/58a217e76b987fbc0c30e8460bc326675035b7d2.gif To commemorate the Nintendo Switch release, new borders have been added. They are the foundation upon which HYNPYTOL stands. {STEAM_CLAN_IMAGE}/44481491/fd0ca3342c5511a3951fdd12093cc2b94cfebb59.jpg Cute updates have been made to the ‘GameKid’ border. Check out the Easter Egg achievements! {STEAM_CLAN_IMAGE}/44481491/a78e96e2c4c23c78d683b740a20a95652de12b6d.png The structure of the Thymus has been remade. Did you know the T in T-cells stands for Thymus? They're named for their final tests in the thymus! {STEAM_CLAN_IMAGE}/44481491/52f0134aa8fa6816a052623a8b5f89a9b81f7790.png A control helper popup now appears in the Bone Marrow! No more confusion… hopefully? {STEAM_CLAN_IMAGE}/44481491/561b3f275a5b784da01114d0ac05aab00547bd3a.png The structure of the Memory Center has been remade. It’s as intricate as its name suggests. Adorable name tags now appear in dialogue! No more guessing who’s who. A ‘Skip Dialogue’ option has been added for multiple playthroughs. Just high-five your way through! Extras have been added to the pause screen and title menu. Check out the codex and credits mid-game! A special new song has been added exclusively for the Immunopedia! Rumor has it there are different versions depending on the situation... The entrance design of the Filter Region has been tweaked. They say the cells have added festive headgear for their sports day! The Paradise of...
    Read full article on Community Announcements (base0)
  • Patch NotesOfficial

    Update Notes For 24.08.29 (v1.4.5)

    The level design of 'Wait, step back!' has been improved. Fixed an issue where filtering settings in the Workshop list did not work correctly when starting a map. Fixed an issue where Workshop functionality did not work properly in certain situations.
    Read full article on Community Announcements (base0)
  • Patch NotesOfficial

    Update Notes For 24.08.07 (v1.4.3)

    Fixed an issue where the control keys did not work properly during testing when undoing and redoing in custom maps. Fixed an issue where door tissues did not work correctly in certain situations in custom maps. Fixed an issue where the game would freeze if too many monocytes were placed in custom maps. Fixed an issue where special characters were not displayed correctly in key names when entered in key settings. Fixed an issue where maps were redownloaded every time when entering the Workshop list. Sorting and filtering settings in the custom map list are now saved. Fixed an issue where the title would break when pressing ESC in custom maps. Fixed an issue with corrupted Chinese fonts.
    Read full article on Community Announcements (base0)
  • Patch NotesOfficial

    Update Notes For 24.08.04 (v1.4.2)

    Further resolved an issue where the monocyte dances left and right in certain situations. Fixed an issue where the monocyte appears stuck even after restarting in certain situations. Levels created in the Workshop now have the ESC screen match the theme color. Fixed an issue where long custom map titles were not fully readable in the list view. Fixed an issue where the achievement rate of "Genius White Blood Cell" was abnormally fulfilled. Resolved an issue where control keys did not work in certain situations. Fixed a bug that prevented custom map creation on the first launch. Fixed an issue where the toggle in the map editor did not work properly after clearing the game. Fixed an issue where the map title remained when exiting a map while the custom map title was displayed.
    Read full article on Community Announcements (base0)

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