Mainframe Industries

Mainframe Industries is an independent, venture-backed video game developer founded in spring 2019 by thirteen industry veterans from Finland and Iceland. Its founding team brought experience from studios including CCP Games, Remedy Entertainment and Next Games. The company develops cloud-native multiplayer games, with a focus on persistent worlds and social sandbox experiences.

Its debut title, Pax Dei, is a medieval-fantasy social sandbox MMORPG built with Unreal Engine 5. The game emphasizes player autonomy, emergent politics, crafting and player-driven economies. Procedural landscape generation supports its expansive world, while social interaction and cooperation are central to its design. The project reflects the studio’s ambition to create an online world designed to persist for decades.

Pax Dei entered public Early Access on Steam on June 18, 2024, co-published with French publisher New Tales. That milestone marked Mainframe’s transition from research and development into live-service MMO operations, bringing ongoing game development together with community relations and player support.

Development approach

Mainframe’s capabilities span game design, client engineering, multiplayer backend infrastructure and live operations. Its technical focus includes persistent virtual world architectures, cloud infrastructure and cross-platform multiplayer networking across PC, cloud and mobile environments. These capabilities support the company’s broader cloud-native development direction; they do not establish that every platform is available for its current game.

The company operates across Finland, Iceland and France, combining game engineering, design, art, world-building, publishing and live-service functions. Its development model brings together teams across these countries around a shared online game project. Privately held and supported by venture investment, Mainframe has attracted backing from gaming and technology investors as it develops and operates its flagship world.