Nürnberg, Germany – June 16, 2025 – Grimstar, the real-time strategy game about corporate servitude, planetary exploitation, and personal loss, launches today exclusively on Steam. Developed by Sven Rahn Games, Grimstar combines a dark science fiction narrative with classic RTS mechanics and a progression system that rewards ruthless efficiency.
In a future where Earth’s energy reserves are exhausted, a powerful corporation turns to the planet Grimstar—rich in alien crystals and teeming with hostile life. After the sudden death of your brother during a mission, company law demands that you fulfill the remainder of his contract. What begins as forced labor becomes a journey into a planetary mystery—and a fight for something more than just survival.
In a future where Earth’s energy reserves are exhausted, a powerful corporation turns to the planet Grimstar—rich in alien crystals and teeming with hostile life. After the sudden death of your brother during a mission, company law demands that you fulfill the remainder of his contract. What begins as forced labor becomes a journey into a planetary mystery—and a fight for something more than just survival.
Check Out Grimstar On Steam
Grimstar features a fully-fledged single-player campaign where each mission deepens the story and expands the scale of your operations. Players will explore and exploit alien environments, manage resources, construct outposts, and command units in real-time battles against native forces. With every mission completed, you level up—unlocking new buildings, upgraded units, and access to more dangerous worlds.
The game introduces three distinct planets, each with its own terrain, vegetation, and strategic challenges. Whether you're mining crystals, recovering alien artifacts, or fulfilling complex corporate directives, every mission pushes you to maximize output and minimize losses. Efficiency isn't optional—it's the only way up.
Hero units add another layer of tactical depth, growing stronger and unlocking new abilities over time. They can be deployed in any mission without draining your resources, making them indispensable allies as the difficulty ramps up.
With its blend of classic RTS gameplay, world-building, and a corporate dystopian narrative, Grimstar challenges players to think strategically and question the systems they serve.
With its blend of classic RTS gameplay, world-building, and a corporate dystopian narrative, Grimstar challenges players to think strategically and question the systems they serve.
Grimstar is available on Steam today. Join the developer's Discord for the latest updates and community support.
Assets
Streaming Trailer
Assets
Streaming Trailer
ABOUT SVEN RAHN GAMES
Sven Rahn Games is an independent game development studio based in Nürnberg, Germany. Focused on delivering rich narrative experiences and deep tactical gameplay, the studio builds strategy titles that challenge players both intellectually and emotionally.
ABOUT INDIE.IO
indie.io is home to hundreds of the world’s most innovative independent video games and developers. Founded in 2020 by Donovan Duncan and Ben Robinson - industry veterans with a collective 40 years of experience across the video game landscape - our mission is to provide support to independent developers and set the standard for gaming creation, management, and promotion. Our tools and services include marketing, QA, playtesting, partnership deals, and distribution to all major platforms to maximize your visibility, revenue, and engagement to ensure long-term success – with no upfront costs. You may know us from Echoes of the Plum Grove, HumanitZ, the Dark Deity franchise, and Coromon!
We’re powered by a worldwide team of 35 remote employees; a mix of semi-professional esports players, developers, and gaming enthusiasts whose passion and technical know-how fuel the company’s mission. As industry experts, we dedicate ourselves to providing innovative marketing support services and integrations; as players, we want to discover and elevate the creators of exceptional, inspiring, and unexpected games of every genre. Join us on our quest to cultivate a vibrant global community of players and creators alike!
indie.io is home to hundreds of the world’s most innovative independent video games and developers. Founded in 2020 by Donovan Duncan and Ben Robinson - industry veterans with a collective 40 years of experience across the video game landscape - our mission is to provide support to independent developers and set the standard for gaming creation, management, and promotion. Our tools and services include marketing, QA, playtesting, partnership deals, and distribution to all major platforms to maximize your visibility, revenue, and engagement to ensure long-term success – with no upfront costs. You may know us from Echoes of the Plum Grove, HumanitZ, the Dark Deity franchise, and Coromon!
We’re powered by a worldwide team of 35 remote employees; a mix of semi-professional esports players, developers, and gaming enthusiasts whose passion and technical know-how fuel the company’s mission. As industry experts, we dedicate ourselves to providing innovative marketing support services and integrations; as players, we want to discover and elevate the creators of exceptional, inspiring, and unexpected games of every genre. Join us on our quest to cultivate a vibrant global community of players and creators alike!