Major update25 Sep 2025Zero-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 and localization QA with incredible dedication! And we hope you the players will enjoy it :) Other game updates in 1.0…
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 small and personal project for us, and we never imagined we could bring it to another platform and a new audience, so than…
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 pre-order it now on eShop for 10% off <3 We are excited to bring our little game to a whole new platform and new audi…
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
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 &…
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.
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 bl…
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, and we hope something in the story resonates with you too. Zero-Sum Heart will be 10% off for the next two weeks, grab it…
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 November 1st, as a late Halloween gift :) For now, welcome to Steam Next fest! You can still try our demo, and don't…
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: Join our Discord:
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 encourage you to check out the demo yourself if you are interested :) Stay tuned, more information coming soon! Follow us on…
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Announcements are the developer’s own posts to the game’s Steam news feed: updates and their patch notes, in-game events, releases and sales. The important ones are marked on the players chart.