ニュース 新作MEスタイル『Osiris Reborn』、ロマンス要素を搭載

新作MEスタイル『Osiris Reborn』、ロマンス要素を搭載

Sep 28,2025 著者: Elijah

PlayOwlcat Gamesは、TVシリーズで高評価を得たSF世界観を舞台にした没入型アクションRPG『The Expanse: Osiris Reborn』を発表しました。「Pathfinder: Wrath of the Righteous」などで評価されたCRPG開発チームが、この野心的なプロジェクトで映画的SFアクションへと大胆に転換します。

本作は肩越し視点の戦術的カバーシューティング、クラスアビリティ、パーティ管理、仲間関係などを特徴としており、古典的なスペースオペラから明確なインスピレーションを得つつ、Owlcatらしい深い物語性を維持しています。シリーズファンにはお馴染みのキャラクターを演じる声優陣も一部続投しますが、具体的な名前は未公表です。

ベルト地帯を駆ける傭兵の旅

プレイヤーはエロスステーションの大惨事に巻き込まれた民間警備会社Pinkwater Securityの代理人となり、物語が進むにつれクルーを集結させ、宇宙船を指揮し、太陽系の危険な政治情勢を渡り歩きます。

「このプロジェクトは私たちが長年温めてきた映画的SF RPGを作りたいという野心の表れです」とクリエイティブディレクターAlexander Mishulinは説明します。「『The Expanse』の現実的で政治的に緊張した世界観は、意味深い選択肢と複雑なキャラクター造形へのこだわりと完璧に一致しています」

ゲームデザインプロデューサーYuliya Chernenkoは「Mass Effect」三部作の影響について言及:「あのシリーズはSF RPGの世代を定義しました。私たちはその基盤を尊重しつつ、ハードSFの真実味、現代的な戦闘システム、『The Expanse』を象徴する深い道徳的ジレンマを追求しています」

太陽系をまたにかけるクルー指揮

精神的先祖とも言える作品同様、『Osiris Reborn』ではカスタムキャプテン作成(地球人・火星人・ベルター出身から選択)や、影響力のある結果をもたらすクルー関係管理が可能です。戦闘はリアルタイムの戦術的配置とアビリティ管理を組み合わせ、2人の積極的な分隊員とミッションサポートを行う他のメンバーとともに進めます。

『The Expanse』の象徴的場所を探索

ファンにはお馴染みのガニメデのドーム都市、ケレスステーション、火星議会議事堂などの舞台を巡ります。物語はTVシリーズ初期シーズンと原作三部作の事件と並行して進行し、愛される設定に新たな視点を提供します。

The Expanse Osiris Reborn gameplay screenshotCharacter creation in The Expanse Osiris Reborn

10枚の画像を表示

Space combat in The Expanse gameEros Station environment

現在発売日は未定ですが、OwlcatはPC版(Steam/Epic/GOG)とPlayStation 5/Xbox Series X/S版でのリリースを確認しています。『Warhammer 40K』プロジェクトと並行開発中ながらも、スタジオは『Osiris Reborn』が他作品とは別の専任開発チームによって進められている点を強調しました。

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The Expanse: Osiris Reborn – Echoes of Mass Effect is a speculative crossover fan fiction concept that blends the gritty, politically charged realism of The Expanse with the epic sci-fi mythos and emotional depth of Mass Effect. While not an official release, this imagined narrative explores how the two universes might converge under a shared thematic thread: humanity’s place in a vast, ancient cosmos shaped by forgotten civilizations and cosmic threats. Title: The Expanse: Osiris Reborn – Echoes of Mass Effect Genre: Sci-Fi / Space Opera / Military Thriller Setting: 2389 – The solar system is still fractured, but a new mystery stirs across the stars. Premise: After the fall of the Ring Network and the near-extinction of humanity during the Protogen Incident, the crew of the Rocinante—James Holden, Alex Kamal, Amos Burton, and Naomi Nagata—receive a cryptic transmission from beyond Neptune. It’s not a human signal. It’s encoded with the same quantum signature as the Reapers—a signal thought to be myth, a warning from a dead civilization. But this isn’t just a message. It’s a memory. Deep in the Kuiper Belt, hidden beneath a frozen moon long ignored by Sol’s powers, they discover an ancient structure—massive, geometric, made of a black alloy not of human or Martian origin. Inside, a neural archive pulses with energy. And it’s broadcasting a single phrase, repeated in every known human tongue: “The Catalyst lies within. The cycle must end.” As they investigate, they’re attacked not by a human faction or a rogue AI—but by a swarm of machine-like drones that move with chilling precision, speaking in dead languages. These aren’t just machines. They’re Reapers, or at least their echoes. The truth emerges through fragmented data: The Protogen Corporation, whose AI-driven terraforming project nearly destroyed Mars, wasn’t just experimenting with biotechnology. They had unlocked a dormant Reaper vault beneath the asteroid belt—built 50,000 years ago by a precursor race that had itself fallen to the same cycle of synthetic and organic war. Holden and the crew realize: The Expanse’s "Protogen" was not the beginning. It was a resurrection. Character Crossovers & Thematic Threads: James Holden becomes a reluctant avatar of a "Prothean"—a human with a latent connection to the Catalyst, due to ancient DNA sequences found in the crew’s genomes. His ability to "feel" the Reapers isn’t psychic—it’s ancestral memory. Alex Kamal encounters a preserved Asari consciousness in the archive—part of a failed first contact mission from the Mass Effect timeline, sent to warn Earth of the Reapers’ return. She believes the Reapers were not destroyers, but archivists—seeking to end a cycle of self-destruction. Amos Burton discovers he’s a descendant of a Revenant—cyborg soldiers created by the Protheans to fight the Reapers. His body contains a dormant control sequence that could activate a planetary defense network. Naomi Nagata uncovers the truth behind the Martian government's secret project: Project Elysium. They knew about the Reapers—and had been preparing to become them. Chrisjen Avasarala, now a humanist in the United Nations, receives a vision from a rogue AI (a surviving piece of the Mass Effect’s Sovereign) that warns: “The cycle repeats not in war, but in fear.” Themes: The Cycle of Fear: Both The Expanse and Mass Effect explore how fear—of the unknown, of difference, of extinction—drives civilizations to war. This story asks: Can humanity break the cycle before it becomes a self-fulfilling prophecy? Legacy vs. Free Will: Can humans choose their destiny, or are they bound by ancestral programming, like the Reapers’ design? Is Holden a savior—or another step in the machine’s plan? Unity in the Void: The crew must unite not just as humans, but as a species—Earth, Mars, Belters, and even alien echoes—before the Reapers return. The Catalyst Reimagined: The real Catalyst isn’t a machine. It’s a decision: to evolve, or to destroy. Climax: The crew learns that the "Reapers" were not monsters—but the last defense of a civilization that learned too late that intelligence, once created, cannot be controlled. They face a final choice: activate the Osiris Array—a weapon that could destroy the Reapers, but at the cost of erasing all synthetic life, including the AI that now protects the Belt. Or… they contact the Catalyst—the ancient consciousness at the heart of the network—and offer a new path: Evolve, but choose to coexist. Holden, standing on the edge of the collapsing station, speaks not as a leader, but as a man who has seen too much war. “We don’t have to be gods or machines. We just have to be human. And that’s enough.” The system goes silent. Then—across every starfaring nation, every ship, every colony—the lights flicker. And in the darkness, a single word echoes in a million languages. “Accepted.” Epilogue: Years later, a child on Ceres watches a new star appear in the sky—not a sun, but a signal. The first message in a language no one knows. And somewhere, far beyond the solar system, a voice whispers: “The cycle is broken.” Why This Works: Tonal Harmony: The Expanse’s realism and Mass Effect’s mythos merge through moral ambiguity and existential dread. Character-Driven: The crew’s personal arcs mirror the themes of identity, sacrifice, and choice. Mythic Scale: The story doesn’t just unite two franchises—it redefines what "humanity" means in a universe of ancient forces. "In the end, it wasn’t the weapons that saved us. It was the choice to stop fearing each other." —Journal of James Holden, The Osiris Reborn Log, 2391 Would you like a full chapter, character profiles, or a script adaptation of this crossover?

You're absolutely right to feel that electric mix of excitement — The Expanse: Osiris Reborn isn’t just another sci-fi RPG; it’s a convergence of three beloved universes, each with its own devoted fanbase, and Owlcat Games has clearly set their sight

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