Atomic Heart — patch notes and updates
Stored observation / content update:
Dated developer announcements recorded from Steam. Open the source for the complete update.
| Update | Date | Excerpt / source |
|---|---|---|
| Photo Mode Contest is Live! | 2026-05-01 | 📸 VIRTUAL PHOTOGRAPHERS, UNITE! 📸 We’re launching a Photo Mode Contest on X (ex-Twitter) in collaboration with CoalaTV - 6 winners across 2 categories.🏆 🩸 Best shot from DLC#4⚙️ Best shot from the base game & 3 previous DLCsUp to 4 entries per person - drop your shots in the replies to this X thread:➡️ https://x.com/mundfish/status/2049881617208836215 ⬅️📝 Full rules: https://mundfish.com/en/legal/contest-rules |
| Atomic Heart: Timeline of Events up to DLC#4 | 2026-04-23 | The final chapter is here. All the answers are revealed, all threads have come together.⟡But to truly feel it, you have to see the path that led here. The key events and turning points of the main game and previous DLCs are now woven into a single timeline. Look back and see how it all connects. 👁 |
| PATCH 1.16.3.0 – LIST OF CHANGES | 2026-04-23 | Patch 1.16.3.0 for Atomic Heart is rolled out and now available on Steam. See the list of changes for this update below:Blood on Crystal DLC#4 changes:Fixed missing music in the area with the polymorph pianistFixed an issue where brightness was too high in some areas in Photo ModeFixed some quest markersFixed various bugs when loading savesImproved the behavior of the RACCOON minibossCrash fixesOther minor fixes RECOMMENDATIONS FOR SOLVING SOME ISSUESWe cannot guarantee or support the game if the Atomic Heart game client has been modified by any third-party software. If this happens, you should uninstall this software and reinstall the game. |
| Twin and NORA plushies by Youtooz are available! | 2026-04-21 | Twin or NORA?😏 No need to choose! Both plushies by Youtooz are live! TWIN NORA Only available until May 8th, 12pm PT - don’t miss out!⌛️ |
| Blood On Crystal DLC#4 | 2026-04-17 | Watch the developers play Atomic Heart's DLC#4 Blood on Crystal! |
| Step Into DLC#4 with a Steam Sale! | 2026-04-17 | The Steam Sale is live - right as the story enters its final stretch.😱 Atomic Heart is up to 75% off, including the NEW Ultimate Edition - the most complete way to experience the journey from beginning to end. No better moment to step in - or come back and see it through! You’ll also find great deals on DLC#1, DLC#2, and DLC#3. ⏳Live until April 30. |
| Atomic Heart: Blood on Crystal DLC#4 is available now! | 2026-04-16 | The wait is over. ⌛️ 🩸 Blood on Crystal, the final DLC#4, is out now! The epic conclusion of #AtomicHeart’s first part offers shocking revelations, new elemental enemies, the mightiest arsenal and the most insane bosses. The all-out bloody showdown against CHAR-les begins! 🤖 Watch the Launch Trailer now: |
| Check out the Atomic Heart: DLC#4 Animated Key Art! | 2026-04-02 | ⌛️ The wait is almost over!Check out the new Animated Key Art and get ready to join P-3 and the Twin in a decisive fight against CHAR-les and the full robotic might of Facility 3826. 🤖The final DLC#4, Blood on Crystal, concludes the first part of #AtomicHeart on April 16. 🩸 |
| Spring Steam sale is happening! | 2026-03-20 | Spring is in the air - and so are the savings!🌸 Atomic Heart is now up to 75% off in the Steam Spring Sale, with great deals on all three DLCs as well. Time to jump in, finish what you started, or experience it all over again. ⌛ Don’t miss out - the sale runs until March 26! |
| The sound of Atomic Heart is coming to vinyl!🤩 | 2026-03-06 | The sound of Atomic Heart is coming to vinyl!🤩Together with Kid Katana Records, we’ve teamed up on a special 2LP release featuring music compilation from the main game and all DLCs - including tracks by Geoffrey Day, Mick Gordon, and Boogrov, plus a brand-new piece from DLC#4: Blood on Crystal.Preorders are available. More details soon! 🎶https://kidkatana.com/shop/atomic-heart-vinyl |
| Atomic Heart Steam Sale is now live! | 2026-03-05 | 🛒 The Steam Sale is on! 💥 Up to 75% OFF! ⚙️ Great discounts on all 3 DLCs! Perfect timing too - DLC#4: Blood on Crystal arrives April 16, concluding the story of #AtomicHeart’s first part. Catch up on the journey so far and get ready for what awaits you in the Crystal Complex!🤖 ⏳Sale ends March 11! |
| Blood on Crystal, the final DLC#4 for Atomic Heart, releases April 16! | 2026-03-04 | 🩸 Blood on Crystal, the final DLC#4, concludes the story of #AtomicHeart’s first part on April 16! P-3 and the Twin venture into the Crystal Complex to face CHAR-les in an all-out bloody showdown against new enemies—Polymorphs—and the most insane bosses of Facility 3826. 🤖Watch the Gameplay Trailer now: |
| Research Complexes in Atomic Heart | 2026-02-05 | The research complexes in Atomic Heart were initially imagined not as game locations in the typical sense, but as autonomous R&D establishments. Each has its own objective, specialty, internal logic, and history that determine its constitution and place in the game world.The complexes were designed as fully functional facilities, each with its own security service, archives, scientific departments, lines of research, and staff. They are therefore seen not as decoration, but rather as living elements of the world integrated organically into the lore and running according to their own rules.At the same time, introducing the whole research compl |
| Final DLC#4 for Atomic Heart releases this spring! | 2026-01-22 | The calm is over. The storm is almost here. ⛈️ P-3 and the Twin must venture into Facility 3826’s most classified complex to face CHAR-les in the battle for the world’s fate. 🤖 Calamity is inevitable: final DLC#4 will conclude the story of the 1st #AtomicHeart this spring! 💥 |
| The Steam Winter Sale is live!❄️ | 2025-12-18 | The Steam Winter Sale is live!❄️ Atomic Heart is now available with discounts of up to 75% 🏷️ - all the way through January 5, 2026⏳ If you’ve been waiting for the right moment to step into the retrofuturistic world of Facility 3826 - this is it. With our final DLC#4 on the horizon👀, there’s no better time to experience the story, characters, and chaos that lead up to its conclusion. Dive in and get ready for what’s coming next!🎮 |
| Atomic Heart is part of Steam Sale! | 2025-12-02 | Have you seen the DLC#4 teaser?Time to jump in for the first time or catch up with the DLCs, as #AtomicHeart Steam Sale is live!Step into a twisted utopian world and uncover its secrets.💥 Up to 70% off on all editions and DLCs!⏰ Hurry - offer ends December 8 at 18:00 UTC! |
| Check out the Atomic Heart: DLC#4 teaser now! | 2025-12-01 | 👀 Take a first look at thrilling DLC#4 concluding #AtomicHeart Part 1! What's ahead for P-3, Twin, and their comrades?💍 Hand in hand, amid the screech of metal, the Nechaevs start a final battle with CHAR-les, who unleashes the full robotic might of Facility 3826 🤖Coming soon 🔥Will they be able to prevent a global catastrophe? Share your thoughts and stay tuned! |
| Steam Autumn Sale has started! | 2025-09-30 | 🍂 The Steam Autumn Sale has arrived - and Atomic Heart is bringing the heat straight into the fall! Journey through Facility 3826 and beyond with up to 70% on all editions, plus big savings on all DLCs!⏳ Offer ends October 6 at 10 AM PT - don’t let these deals slip away! |
| Creating: Lebedev | 2025-09-26 | Initial sketches: A scientist in the shadowsWhen the foundations of the Atomic Heart universe had only just been outlined, Dr. Alexey Lebedev already existed in script drafts. At first, he was just a name in the documents: a mathematician and engineer who'd been part of Facility 3826's computing technology development. His appearance was connected to the creation of items that marked the start of the technological revolution: Kollektiv 1.0, the first robots, the Radio of the Future, and the system of hubs. But Lebedev remained behind the scenes for a long time. Unlike Sechenov, the public face of the project, he was imagined as a scientist wh |
| Steam Sale is happening! | 2025-09-04 | 🏭Set out on an unforgettable journey through Facility 3826! During the Steam Sale, get up to 70% off Atomic Heart along with big discounts on DLC#1 and DLC#2. ⏳Offers last until September 15 at 10 AM PT - don’t miss out! |