A downloadable game for Windows and macOS

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Hazy Days is a Breathing Simulator set in China.

The game follows Xiao Feng, a young schoolgirl who is about to visit her Grandmother for Chinese New Year. Over the course of seven days, players control her breathing as she faces increasing levels of pollution in the city.

* Story grounded in reality.

* Simple, yet challenging, one-button gameplay.

* Entertaining and educational in nature.

* Over 25K downloads on MAC/PC/iOS.


“A surprisingly emotional experience” - KJ Robertson (alphabetagamer)

“A simple game to show how high levels of air pollution are affecting China’s citizens—in particular, its children.” –Rachel Pick (VICE)

“The delivery of the message is excellent.” – Brendan Caldwell (Rockpapershotgun)

"[Hazy Days] recalls the political games of Molleindustria that focus on the terrible human conditions"– (Killscreen)

"Although only a single button is needed, the game is deceptively challenging." - Carlos Daez (Thecurrent)

“It is cruelly real.” - Belén Gómez (Onseriousgames)

"It’s simple but effective, the kind of eye-opening game that’s sorely lacking in the China gaming arena." -  Pavan Shamdasani (South China Morning Post)

"It's not often that you come across a great game that is intentionally created to raise awareness about important issues." - Mike Catabay (Nick Jr. Parents)


I've been living in China for years now and while the city is great, the air pollution is a real issue that people deal with on a day-to-day basis. I made Hazy Day based on my own personal experiences and I hope that it can help put into perspective what it feels like to breathe in smog.

China's air pollution levels are constantly covered in the media. With Hazy Days, I hope to humanize the issue so that the problem can be more relatable. Thanks for playing.


If you enjoyed playing Hazy Days, please consider donating. Your donations will help support this project and other games I'm developing. Every little bit helps. If you are unable to donate, please consider rating, leaving a review, or sharing this game with a friend. Thank you!

PlatformsWindows, macOS
Rated 4.6 out of 5 stars
(7 total ratings)
AuthorMike Ren
GenreSimulation, Educational
Tags2D, artgame, Casual, Cute, Female Protagonist, Minimalist, one-button, social-awareness
Average sessionA few minutes
LanguagesEnglish, Chinese (Simplified)
AccessibilityOne button


Download NowName your own price

Click download now to get access to the following files:

HazyDays_MAC (32-bit) .zip 19 MB
HazyDays_PC.zip 17 MB
HazyDays_MAC_Catalina_64bit.zip 21 MB

Also available on

Development log


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You should upload the apk of the Android version on itch.io you don't need to publish on Google play store

yea I'll let you know! Thanks!

Can you please port this game on Android plz reply

Thank you

Hey! Definitely something I'm thinking about for the future. Thank you! 

The game looks really good but it keeps buffering and pausing randomly. I'd love to play but I can't (Mac version 4/4/20)

Hi! Are you running on Catalina or an older version of macOS?

I'm running Mojave

Check out the latest version for Mac OS, if it still seems to run slow, let me know. I'll re-upload the 32bit version. Thanks! 

I've made a quick update on the 64 bit version, try it out and if it still buffers let me know!

Hey there! I have a Mac and my computer says I can't open this because it's not set up for the latest version of Mac, if you could fix it by any chance I'd be super excited to play!

Hi there! I just finished updating the game to support the latest Macs. Should be working now. If you get a pop-up that says "cannot open because of unidentified developer" Hold [CONTROL] and select [OPEN] to start it. Let me know if you have any other problems! 

Thank you so so much! This game was so amazing and so well put together. It's a great eye opener, thank you. I hope it gets better

Thank you for playing!