《夕鬼》（Yuoni）是一款由 Tricore Inc. 開發的第一人稱心理恐怖遊戲，並登上 PlayStation 5 等平台。

背景設定在1990年代的日本，主角是一名名叫「Ai」的小學五年級少女。她因為參加一場看似普通的「試膽遊戲」，意外被帶入一個永遠停留在黃昏時刻的異世界。在這個世界裡，整個空間被染成詭異的夕陽紅色，學校、日式民宅與醫院等場景彼此錯亂相連，形成既熟悉又不安的環境。

隨著故事展開，Ai 被迫與名為「阿常」的幽靈一起進行詭異的遊戲。她不斷在這個世界中逃亡，躲避各種超自然存在，例如沒有眼睛卻能追蹤聲音的怪物，以及無法以常理理解的靈體威脅。更可怕的是，這些異象甚至逐漸滲透回現實世界，使她的日常生活也開始崩壞。

玩法上，採用第一人稱視角，並分為兩種主要遊戲模式。前半段以「捉迷藏」為核心，需要探索環境並尋找逃脫所需的道具，同時避開敵人的追捕；後半段則轉變為類似「鬼抓人」的追逐玩法，必須運用前期收集的資源與策略成功逃離。整體流程強調記憶路線與環境觀察，一旦走錯方向便可能陷入危險。

敵人各自擁有不同感官限制，例如有些敵人依靠視覺，有些則依賴聽覺，因此玩家必須靈活運用「屏息」、「潛行」與「奔跑」等行為來生存。但由於主角只是小學生，移動能力有限，讓逃亡過程更加緊張壓迫。

劇情層面則圍繞孤獨、童年創傷與人際關係展開。隨著玩家深入黃昏世界，Ai 不僅面對超自然恐懼，也逐漸揭開同伴之間隱藏的秘密與黑暗情感，使整體故事帶有強烈的心理驚悚色彩。

整體而言，《夕鬼》結合日本懷舊校園氛圍與超現實恐怖元素，以獨特的「黃昏世界」美學與高壓逃生玩法，營造出一種既唯美又令人不安的恐怖體驗。

Yuoni (Japanese title: 夕鬼) is a first-person psychological horror game developed by Tricore Inc. and released on platforms including PlayStation 5.

The story follows a fifth-grade girl named Ai, who is drawn into a strange “twilight world” after participating in what seems like a harmless childhood dare game. This world is permanently stuck in an eerie sunset state, with environments such as schools, Japanese houses, and hospitals distorted and interconnected in unnatural ways.

As Ai explores deeper, she is forced to play disturbing games with a ghostly entity known as “Atsune” (or “Atsune/阿常” depending on translation). What begins as childhood play quickly turns into a survival nightmare, where she must escape from supernatural entities that hunt her through sound, sight, or unknown rules. The boundary between the twilight world and reality gradually begins to blur.

Gameplay is primarily first-person survival horror. Early sections focus on stealth and exploration, often resembling hide-and-seek mechanics where the player must search for items while avoiding enemies. Later sections shift into more intense chase sequences that require memorization of map layouts, careful movement, and resource management.

Different enemies have different sensory abilities—some rely on vision, others on sound—forcing players to adapt by holding their breath, sneaking, or running at the right moment. Because the protagonist is a child, movement feels deliberately limited, increasing tension during pursuit sequences.

Narratively, the game explores themes of childhood fear, isolation, and psychological trauma. As Ai progresses through the twilight world, she uncovers hidden emotional tensions and unsettling truths connected to her peers, giving the story a deeper psychological horror tone rather than relying only on jump scares.

Overall, Yuoni blends nostalgic Japanese school imagery with surreal horror aesthetics, creating a tense experience built on vulnerability, atmosphere, and constant pursuit.