In a landmark shift for the gaming industry, Fenris Creations—the studio formerly known as CCP Games—has officially released its proprietary "Carbon" game engine as an open-source project. This move, which comes two years after the studio first announced its intentions, marks the culmination of a long-term strategy to decentralize development and invite the public to pull back the curtain on one of the most resilient pieces of software in the sci-fi MMO genre: Eve Online.
The code is now live on GitHub, available under a largely permissive MIT license. By handing over the keys to the engine that has powered two decades of interstellar warfare, Fenris Creations is betting that the "rising tide" philosophy of open-source development will ultimately benefit the long-term health and innovation of the Eve universe.
Chronology: From Secret Sauce to Open Source
The journey toward an open-source Carbon engine was not a sudden pivot, but a calculated "slow burn" that spanned several years.
- 2003: Eve Online launches, powered by the initial iterations of the Carbon engine, setting the stage for what would become one of the most complex, single-shard persistent worlds in gaming history.
- 2022: Fenris Creations (then CCP Games) publicly signals its intention to open-source the Carbon engine, citing a desire for greater transparency and community engagement.
- 2024 (Early): The studio begins an intensive 12-week sprint to strip away proprietary middleware, isolate core engine modules, and clean up the codebase for public consumption.
- 2024 (Late): The engine is formally released to the public on GitHub, accompanied by documentation, contribution guidelines, and a roadmap for future development.
For senior development director Ben Hunter, the decision to open-source was born from a realization that the studio’s "special sauce" was no longer a competitive advantage. "We arrived at this point two and a half to three years ago, where we decided there’s nothing really special about our sauce in terms of the actual code," Hunter says. "We, and the community, would be better served by actually getting it out there."
Supporting Data and Technical Architecture
The Carbon engine is not a monolith; it is a modular system that has been meticulously prepared for external review. To ensure maximum accessibility, the team opted for the MIT License for the vast majority of the engine’s modules. This allows developers to use, modify, and distribute the code without commercial restrictions, effectively mirroring the "Linux-style" development model.
There are, however, nuances in the licensing for specific components:
- Spatial Audio Clustering: Covered by the Apache License 2.0.
- IO Modules: Governed by the Python Software Foundation License.
Crucially, the studio maintained a strict "surgical" approach to what was included. The complex, multi-million-dollar in-game economy of Eve Online—a system characterized by deep, often volatile, player-driven trading—was intentionally excluded. This separation ensures that the core engine infrastructure is separated from the proprietary business logic that keeps the Eve economy stable.
The Governance Model
Recognizing that open-sourcing is as much about people as it is about code, Fenris Creations sought advice from the Godot Engine team. The resulting governance structure emphasizes:
- Pull Request (PR) Templates: Standardizing how contributions are submitted and vetted.
- Testing Rigor: Every submission must meet strict testing criteria before it is considered for the main branch.
- AI Disclosure: In a nod to the modern era of coding, contributors are required to disclose the use of Large Language Models (LLMs). While the studio welcomes AI-assisted code, they note that such submissions will be subjected to higher scrutiny.
Official Responses: Building Trust Through Transparency
For Ben Hunter, the primary motivation for this project is "inspectability." By allowing the community to view and improve the engine, the studio is fostering a level of trust that is rare in the high-stakes world of MMO development.
"Fenris has a long history of building communities and engaging with them," Hunter explains. "If you look back to the early days of Eve, when we exposed our application programming interface (API), that was the start of our effort to engage with the community. We’re very excited to see what crazy things they do."
Regarding the inevitable risks of opening a 23-year-old codebase to the public, Hunter remains optimistic. He notes that the "battle-hardening" the engine has received through years of intense player-driven combat and probing by "nefarious actors" has resulted in a remarkably secure foundation. "The number of security-related PRs that we’ve had is quite minimal," he says, viewing the public access as a way to "crowdsource" security patches that might otherwise take the internal team longer to identify.
Implications for the Industry
The move by Fenris Creations occurs against the backdrop of a massive shift in the engine landscape. With Epic Games pushing for AI integration in Unreal Engine 6 and developers increasingly wary of licensing changes in the wake of Unity’s controversial pricing policies, the industry is experiencing a "flight to openness."
The Rise of Plug-in Architecture
Fenris is currently transitioning Carbon toward a plug-in-first architecture. This mirrors the industry standard set by Unreal and Unity, allowing developers to extend the engine without modifying the core. This is a critical step for operational governance; by isolating features into plugins, Fenris can accept community contributions without compromising the stability of the engine’s core.
Impact on Eve Frontier and Future Projects
The release of Carbon is deeply tied to the studio’s forward-looking projects, such as Eve Frontier. As the studio moves toward creating more "builder-centric" experiences, having an engine that is understood, optimized, and expanded by the community becomes a significant force multiplier.
The studio is also currently developing a "test project"—a simplified, non-game demonstration environment. This will allow the core tech team to validate engine changes without needing to risk the stability of the live Eve server. Once finalized, this test environment will also be released to the public, providing a "sandbox" for new contributors to learn the codebase.
Looking Forward: A Five-Year Vision
When asked where he sees Carbon in five years, Hunter envisions a vibrant ecosystem where the Eve universe is no longer confined to the official game client. He hopes to see community-built infrastructure, custom apps, and perhaps even experimental game modes that leverage the Carbon engine to create entirely new experiences within the Eve IP.
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"I would like to see it contributing to the Eve universe as a whole," says Hunter. The goal is to move from a model of "developer-as-gatekeeper" to "developer-as-facilitator."
By releasing Carbon, Fenris Creations is effectively treating the engine as a public utility for its community. While the commercial success of their games will always remain a priority, the studio has clearly concluded that the future of their technology lies in the hands of the players who have spent two decades living inside it. Whether this leads to a renaissance of Eve-based community projects or sets a new standard for engine transparency, the "Carbon experiment" is poised to be one of the most watched developments in the software engineering side of the video game industry.
The barrier between creator and player has not just been lowered—it has been opened, and the community is invited to start building.
