Yuki-Onna Checker

An idle desktop mascot that reacts to your PC's temperature

闇宮 · Released Apr 1, 2026

Reviews: Very Positive; 91% of 106
Recent reviews: Not enough recent
Players: 5; daily peak, Oct 28, 2026
Steam Deck: Untested
Last update on Steam: 5 months ago; May 14, 2026
Minimum PC: –; not published

What is Yuki-Onna Checker?

You keep a 2D snow-woman companion on screen while working or playing other games. Based on your CPU or GPU temperature, she displays hearts and recovers health at 40°C or below, stays normal from 41°C to 50°C, and shows flames and takes damage at 51°C or above.

For you if...

+you like anime characters and pixel art

Not for you if...

−you want active gameplay rather than a background companion

What players say

91% of 106 reviews are positive

Players praise the cute desktop companion, but several report missing or inaccurate temperature readings.

Screenshots and trailer

Yuki-Onna Checker system requirements

As published by the developer.

Can my PC run Yuki-Onna Checker?

The published requirements do not name a graphics card we can compare.

Set up my PC →

Minimum

OS: Windows10
Notes: Some features read the CPU/GPU temperature of your PC. This information is used only for in-game processing and is never transmitted externally. On some systems, temperature information may not be available.

Does Yuki-Onna Checker have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Single-player

Does Yuki-Onna Checker run on Steam Deck?

Untested Not yet tested by Valve on Steam Deck.

PC version details

DRM: None declared on Steam
Controller: Keyboard and mouse
Platforms: Windows
Achievements: 4
Steam features: Family Sharing
Languages: Text only: English, French, Italian, German, Spanish - Spain, Arabic, Indonesian, Ukrainian, Dutch, Greek, Swedish, Spanish - Latin America, Thai, Czech, Danish, Turkish, Norwegian, Hungarian, Finnish, Bulgarian, Vietnamese, Portuguese - Brazil, Portuguese - Portugal, Polish, Romanian, Russian, Simplified Chinese, Traditional Chinese, Japanese, Korean, Icelandic, Irish, Azerbaijani, Assamese, Afrikaans, Amharic, Albanian, Armenian, Igbo, Uyghur, Welsh, Wolof, Uzbek, Urdu, Estonian, Odia, Kazakh, Catalan, Kannada, Galician, K'iche', Kyrgyz, Khmer, Croatian, Gujarati, Quechua, Xhosa, Konkani, Sindhi, Sinhala, Georgian, Scots, Slovak, Slovenian, Swahili, Zulu, Serbian, Sotho, Sorani, Tajik, Tatar, Tamil, Dari, Cherokee, Tswana, Tigrinya, Telugu, Turkmen, Nepali, Hausa, Basque, Valencian, Punjabi (Gurmukhi), Punjabi (Shahmukhi), Hindi, Filipino, Hebrew, Belarusian, Bangla, Persian, Bosnian, Maori, Macedonian, Malayalam, Marathi, Maltese, Malay, Mongolian, Yoruba, Latvian, Lithuanian, Luxembourgish, Kinyarwanda.

Does Yuki-Onna Checker use AI-generated content?

Yes. The developers disclose AI-generated content on the game's Steam page:

Some illustrations on the store page were created using AI.

The statement mentions: Store page & marketing

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 27, 2026. How to filter AI games on Steam