《十三機兵防衛圈》（13 Sentinels: Aegis Rim）是一款由 Vanillaware 開發、ATLUS 發行的劇情導向冒險遊戲。

最初於 2019 年 11 月 28 日在 PlayStation 4 平台推出，之後於 2022 年 4 月 14 日登上 Nintendo Switch。遊戲類型被歸類為「劇情冒險遊戲」，並採用多視角群像敘事結構，讓玩家從不同角色的角度拼湊整體故事。

故事背景主要設定在 1985 年的日本，但時間線橫跨 1945 年至 2105 年的不同年代。十三名高中生被捲入一場世界級災難，他們駕駛被稱為「機兵（Sentinels）」的巨大機械，對抗神秘生物「怪獸（Kaiju / Deimos）」。隨著劇情推進，會逐步揭開這些角色為何戰鬥，以及整個世界的真相。整體劇情以拼圖式敘事設計，每位角色都只提供世界觀的一部分資訊，最終組合成完整的科幻謎團。

玩法主要分為三大系統。「記憶（Remembrance）」是冒險探索模式，玩家在精緻的 2D 場景中推進劇情，並透過「雲端同步（Cloud Sync）」關鍵字系統觸發分支內容，藉由思考或選擇關鍵字來推動故事發展。「毀滅（Destruction）」則是即時戰略戰鬥模式，需部署不同類型的機兵，例如近戰型、全能型、遠程型與飛行支援型，來抵禦敵人一波波攻勢。「分析（Analysis）」則是一個資料庫系統，用來整理時間線、專有名詞與角色關係，幫助玩家理解複雜的劇情結構與伏筆。

在評價方面，獲得極高的評價，被廣泛認為是史上最優秀的敘事型遊戲之一，許多玩家形容它是一款「希望能第一次再體驗一次」的作品。遊戲也獲得多項獎項肯定，包括日本遊戲大賞與文化廳媒體藝術祭等榮譽。

Nintendo Switch 版本被視為強化版，除了收錄 PS4 版所有追加內容外，還新增了各角色專屬武器，因此普遍被認為是最完整的版本。截至 2024 年，本作全球累計出貨量已突破 100 萬套，並透過口碑取得商業成功。

13 Sentinels: Aegis Rim is a narrative-driven adventure game developed by Vanillaware and published by ATLUS. Below is a structured overview of its basic information, story, gameplay systems, and reception.

The game was released on PlayStation 4 on November 28, 2019, and later on Nintendo Switch on April 14, 2022. It is classified as a dramatic adventure game with a multi-perspective ensemble narrative structure.

The story is set primarily in Japan in 1985, but it also spans multiple time periods ranging from 1945 to 2105. Thirteen teenagers become involved in a catastrophic conflict and pilot giant mechs known as “Sentinels” to fight against mysterious creatures called “Kaiju” (known as “Deimos”). As the narrative unfolds, players gradually uncover why these characters are fighting and the true nature of their world. The story is designed like a complex puzzle, where each character’s perspective reveals different fragments of a larger science-fiction mystery.

The gameplay is divided into three main systems. The “Remembrance” section is an adventure mode where players explore beautifully illustrated 2D environments. It uses a “Cloud Sync” keyword system, allowing players to trigger story branches by thinking of or interacting with keywords. The “Destruction” section is a real-time strategy battle mode in which players deploy different types of Sentinels—such as close-range, all-round, long-range, and flying units—to defend areas and eliminate waves of enemies. The “Analysis” section functions as a database that organizes timelines, terminology, and character relationships, helping players track the complex narrative structure and foreshadowing.

In terms of reception, the game received overwhelming critical acclaim. It is widely regarded as one of the greatest narrative video games ever made, often described as a title players wish they could experience again for the first time. It has received numerous awards, including recognition from the Japan Game Awards and the Agency for Cultural Affairs Media Arts Festival.

The Switch version is considered an enhanced edition, including all bonus content from the PS4 release as well as additional weapons for each character, making it widely regarded as the definitive version. The game achieved strong commercial success through word of mouth and has surpassed 1 million copies shipped worldwide as of 2024.