《原子之心：Ultimate Edition》（Atomic Heart: Ultimate Edition）是由Mundfish開發的第一人稱動作射擊遊戲完整版本。以充滿理想與瘋狂交織的架空蘇聯未來世界為舞台，結合強烈的復古科幻美學與血腥暴力的戰鬥風格，打造出一個表面完美、實則暗潮洶湧的烏托邦。Ultimate Edition除了收錄本篇遊戲外，亦包含多種武器外觀包、數位美術設定集以及擴充內容，提供更完整的遊戲體驗。

在基本設定與劇情方面，描繪一個人類與高度智能機器人和平共存的理想社會。透過名為「Kollektiv」的神經網絡系統，所有機器被統一連結與控制，使生產、勞動與生活達到前所未有的效率與和諧。然而，就在新一代機器人控制系統即將啟動之際，一場突如其來的重大事故打破這一切。機器開始失控，變異體與實驗產物四處肆虐，整個設施陷入血腥混亂。主角特工少校P-3，被派往事件核心的設施「3826號」調查事故真相，並阻止機密外洩。隨著探索逐步深入，玩家將揭開隱藏在這個理想世界背後的黑暗秘密，並面對科技失控所帶來的毀滅性後果。

在操作與系統設計上，融合射擊、近戰與技能運用的多層次戰鬥機制。使用各式槍械與近戰武器，並搭配主角配備的實驗性「動力手套」，施展如電擊、念力或冰凍等特殊能力。戰鬥強調靈活應變與資源管理，不同敵人擁有獨特行為模式，需觀察其行動並制定對策。此外，允許玩家利用環境作為武器，例如引爆設施、操控機械或將敵人彼此牽制，使每場戰鬥都充滿變化。開放式區域設計與大型研究設施提供探索空間，可透過駭入系統、收集資料與升級裝備，逐步強化自身能力。遊戲亦支援多樣化操作方式與升級系統，使整體節奏在激烈戰鬥與探索解謎之間取得平衡。

市場評價方面，普遍被視為一款風格極為鮮明的作品。評論多半肯定其獨特的美術設計與世界觀建構，特別是將蘇聯復古風格與未來科技融合所呈現出的強烈視覺衝擊。此外，戰鬥系統的自由度與多樣性也獲得不少好評，讓玩家能以不同策略應對敵人。然而，也有部分聲音指出遊戲在敘事節奏與系統引導上略顯混亂，某些機制學習門檻較高。儘管如此，整體而言，本作仍被認為是一款兼具創意與實驗性的第一人稱射擊遊戲，其大膽的世界觀與張力十足的氛圍，使其在同類型作品中展現出獨樹一幟的魅力。

Atomic Heart: Ultimate Edition is a complete edition of the first-person action shooter developed by Mundfish. Set in a surreal utopian version of a retro-futuristic Soviet world, the game blends striking sci-fi aesthetics with intense, violent combat to create a setting that appears perfect on the surface but hides deep underlying chaos. The Ultimate Edition includes the base game along with additional weapon skin packs, a digital artbook, and other extra content, offering a more comprehensive gameplay experience.

In terms of its setting and narrative, the game portrays an ideal society where humans coexist harmoniously with highly intelligent robots. Through a neural network system known as “Kollektiv,” all machines are interconnected and centrally controlled, allowing production, labor, and daily life to reach unprecedented levels of efficiency and balance. However, just days before the launch of a new robot control system, a catastrophic incident disrupts everything. Machines suddenly go rogue, while mutants and experimental creations begin to wreak havoc, plunging the entire facility into chaos. Players take on the role of Major P-3, an agent sent to Facility 3826 to investigate the incident and prevent classified information from leaking. As the story unfolds, players gradually uncover the dark secrets hidden beneath this so-called utopia and confront the devastating consequences of unchecked technological advancement.

In terms of gameplay and mechanics, Atomic Heart combines shooting, melee combat, and special abilities into a layered combat system. Players can wield a wide range of firearms and melee weapons, enhanced by an experimental “polymer glove” that grants abilities such as electricity, telekinesis, and freezing powers. Combat emphasizes adaptability and resource management, as each enemy type exhibits distinct behaviors that require different strategies. The environment itself can also be used as a weapon—players can trigger explosions, manipulate machinery, or even turn enemies against one another, ensuring that no two encounters feel the same. The game features semi-open areas and large research facilities to explore, where players can hack systems, gather information, and upgrade their equipment to grow stronger. This balance between intense combat and exploration creates a dynamic and engaging gameplay rhythm.

As for reception, Atomic Heart is widely regarded as a highly distinctive title. Critics have praised its unique art direction and world-building, particularly its fusion of Soviet-era retro style with futuristic technology, which creates a visually striking experience. The flexibility and variety of its combat system have also been well received, allowing players to approach encounters in multiple ways. However, some players have noted issues with pacing and system clarity, as well as a somewhat steep learning curve for certain mechanics. Overall, the game is considered a creative and experimental entry in the first-person shooter genre, standing out for its bold vision and immersive, tension-filled atmosphere.