Zero-Sum Heart

Released: Oct 31, 2024
Platforms
Last updated: 15 Sep 2026, 17:54 GMT

Updates & announcements

14 posts

31 Oct 2025Developer post
Happy 1 Year Anniversary of Zero-Sum Heart
Hi Everyone, This is Mari and Jenny from Citreat Studio, the developers of Zero-Sum Heart! We just wanted to pop in to say thank you as we reach the 1-year anniversary of this little game. Zero-Sum Heart, alongside the soundtrack and artbook, it's currently on discount for Scream
25 Sep 2025Developer post
Zero-Sum Heart Now Available in Spanish (LATAM)
Hi everyone, This is Jenny and Mari, developers of Zero-Sum Heart. We wanted to pop in for an exciting announcement: Zero-Sum Heart is now available in LATAM Spanish! We want to say our heartfelt thanks to the generous help of Francisca Stachiotti, who worked on the translation a
Hi everyone,
This is Jenny and Mari, developers of Zero-Sum Heart. We wanted to pop in for an exciting announcement: Zero-Sum Heart is now available in LATAM Spanish!
We want to say our heartfelt thanks to the generous help of Francisca Stachiotti, who worked on the translation and localization QA with incredible dedication! And we hope you the players will enjoy it :)
Other game updates in 1.0.16:
Fixed an issue where the "two years later" and "ten years later" screens weren't displaying correctly in certain languages
Fixed an issue where the strikethrough texts in bubble dialogue weren't displayed correctly in certain languages.
We are also currently participating in Fall In Love festival, full of romance visual novels from other wonderful developers around the world! Please check out the other works in the festival, and we hope you enjoy playing :)
Original post
18 Aug 2025Developer post
Zero-Sum Heart - French Support Added
Hi everyone, We are so excited to tell you that Zero-Sum Heart is now available in French! We want to give our sincere gratitude to ZHY club , particularly these following translators, for their hard work in bringing Zero-Sum Heart to life in French: djin Ouragan fhkatez Dur-714
Hi everyone,
We are so excited to tell you that Zero-Sum Heart is now available in French!
We want to give our sincere gratitude to ZHY club, particularly these following translators, for their hard work in bringing Zero-Sum Heart to life in French:
djin
Ouragan
fhkatez
Dur-714
We are in love with how these graphics look, and we are excited to bring it to a new audience:
Additional patch note for 1.0.13:
Added a credits video in French with translated lyric subtitles and translation credits
Fixed a bug in Japanese and Traditional Chinese where the gallery title and background were displayed incorrectly
(Spoilers) Fixed a bug in which the game failed to account for whether players had jumped in the lake to retrieve the bracelet when it... uh, comes up later in a certain conversation with the witch. Damn you Steam, give me back my spoiler tags in the visual editor please!
We are also going to work with our Nintendo Switch platform publishers to bring this update to our NS version as soon as possible, but that may take a little more time with working with porting and platform certification wait (Btw if you didn't know, Zero-Sum Heart is now on Nintendo Switch, featuring a deluxe version with the artbook and OST yay!)
Original post
24 Jul 2025Developer post
Zero-Sum Heart is OUT NOW on Nintendo Switch!
Hi everyone, This is Mari & Jenny from Citreat Studio. We are so excited to announce that Zero-Sum Heart is now out on Nintendo Switch! This edition includes the digital artbook and OST too :) You can purchase and play it right now for 10% off across all regions! This was a s
10 Jul 2025Developer post
Zero-Sum Heart is coming to Nintendo Switch on July 24th!
Hi everyone, This is Mari and Jenny from Citreat Studio! We are excited to work with Jump to bring you Zero-Sum Heart on Nintendo Switch eShop on July 24th :) The Switch version will contain the game itself, the Original Soundtrack, and the Artbook with our commentaries. You can
25 Mar 2025Developer post
1.0.11 Patch Notes
- Fixed some typos - Fixed Traditional Chinese credits video language display
13 Jan 2025Developer post
1.0.10 Patch Notes
Fixed a bug where phantom slots appeared in the gallery that couldn't be unlocked (Tried, hopefully, let me know if it works) fixed an issue where Steam Achievements couldn't be unlocked
Fixed a bug where phantom slots appeared in the gallery that couldn't be unlocked
(Tried, hopefully, let me know if it works) fixed an issue where Steam Achievements couldn't be unlocked
Original post
06 Jan 2025Developer post
Japanese Localization Added!
Hi everyone, We are excited to announce that with the great help of a player 望入世, we've now added Japanese localization for the whole game! We are very excited to see more players be able to enjoy the game with this new update :) Other Fixes: Updated the Settings menu (Made font
Hi everyone,
We are excited to announce that with the great help of a player 望入世, we've now added Japanese localization for the whole game! We are very excited to see more players be able to enjoy the game with this new update :)
Other Fixes:

Updated the Settings menu (Made font consistent across settings text, took off font and voice volume)
Reduced the file size of the credits cutscene & therefore reducing build size
Fixed an issue with Traditional Chinese Localization where choosing to talk to Mushroom about your feelings will lead to text incorrectly displayed in English
Fixed an issue with Traditional Chinese version where the [2 years later] and [10 years later] time skip countdown UI wouldn't display correctly
We also want to share with you a couple of comic drabbles we drew as a crossover between Zero-Sum Heart and our previous game Death Trick: Double Blind:
You can find these games together in this little bundle:
https://store.steampowered.com/bundle/46209/From_the_same_creators/
Original post
05 Nov 2024Developer post
1.0.7 Patch Notes
Bug fix: Fixed an issue where I built the previous version when my Unity license disconnected, causing the "trial version" watermark appearing at the bottom right of the game. Fixed an issue where the log page shows the protagonist's name as "IChildhood" during a flashback. Fixed
Bug fix:

Fixed an issue where I built the previous version when my Unity license disconnected, causing the "trial version" watermark appearing at the bottom right of the game.
Fixed an issue where the log page shows the protagonist's name as "IChildhood" during a flashback.
Fixed a typo in Chinese localization.
Original post
04 Nov 2024Developer post
1.0.6 Patch Notes
Hi everyone, Thank you for playing Zero-Sum Heart! Here's a quick patch-- If you encounter any more bugs, you can reply to the bug report thread in the forum, or message us through Discord. Fixed a bug where players get stuck on certain mid-game ending pages Fixed a bug where in
Hi everyone,
Thank you for playing Zero-Sum Heart! Here's a quick patch-- If you encounter any more bugs, you can reply to the bug report thread in the forum, or message us through Discord.

Fixed a bug where players get stuck on certain mid-game ending pages
Fixed a bug where in the Water Under the Bridge ending, the protagonist sprites have a display error: Her hair should be white, not blue.
Fixed a bug where during Ritual reversal, The Witch mistakenly tells you you've killer Bear, even if you hadn't.
Fixed a few typos and rogue punctuation marks.
Original post
01 Nov 2024Developer post
Zero-Sum Heart is OUT NOW!
Hi everyone, This is Mari & Jenny, the developers of Zero-Sum Heart. We are so excited, and anxious, and grateful, and relieved to tell you: Zero-Sum Heart is out now! We've been hard at work pouring our hearts (hehe, get it, hearts?) into this game for the past six months, a
15 Oct 2024Developer post
Try the demo at Steam Next Fest!
Hi everyone, We are so excited to tell you we've basically wrapped production on Zero-Sum Heart! Doing some final bug fixing now, and we are working on finalizing the artbook and soundtrack to be released with the full game. Looking forward to sharing this story with everyone on
19 Sep 2024Developer post
Demo Available Now + Release Date Announcement!
Hi everyone, We are so excited to let you know that Zero-Sum Heart has a demo out right now! And the full game will be coming on November 1st, right around Halloween season :) Wishlist Zero-Sum Heart, so you can get an email notification when it comes out: Follow us on Twitter: J
19 Sep 2024Developer post
Now Broadcasting - Watch the Developers Play!
Hi everyone! This is the developers from Citreat Studio: Mari and Jenny. We are so excited to announce we are participating in Game Developer's of Color event, and we've also officially released our demo! We'll be broadcasting our playthrough throughout the event, but we encourag