Atomic Heart Third DLC Expansion Details and Release Window

Atomic Heart fans can anticipate the third story expansion, a new chapter created by the Russian studio Mundfish. The company announced on its official Telegram channel that the DLC is slated to arrive in the upcoming winter season. The update hints at a broader journey, with players able to revisit familiar places while also encountering new locales. Among the new venues, an underwater complex is described, with insiders suggesting the name Neptune as a likely label for the depth-filled environment. Mundfish has framed the expansion as a continuation of the game’s distinctive blend of first-person action and role-playing elements, promising fresh twists, environmental variety, and challenges that push the protagonist through unfamiliar waters and surfaces alike. In short, the expansion aims to widen the world-building and narrative stakes while maintaining the quirky, ominous tone players expect from Atomic Heart.