Streum On Studio

Streum On Studio is an independent French video game developer based in the Paris area. Its work centres on first-person shooters and action role-playing games, combining combat systems with character progression, cybernetic customization and dark science-fiction or fantasy settings. The team traces its origins to the 1999 Half-Life total conversion mod Syndicate Black Ops and incorporated as a company in July 2007.

The studio made its commercial debut with E.Y.E: Divine Cybermancy in 2011. Built using Valve’s Source engine, the cyberpunk shooter combined tactical shooting, RPG mechanics, cybernetic upgrades and psychological trauma systems. Its subsequent work expanded into licensed tabletop universes through collaborations with Focus Home Interactive and Games Workshop.

From cyberpunk to Warhammer

Streum On developed Space Hulk: Deathwing, released in 2016 and co-produced with Cyanide Studio, followed by its Enhanced Edition in 2018. The studio then delivered Necromunda: Hired Gun in June 2021, bringing fast-paced first-person combat to another setting within Warhammer 40,000. These projects extended its work across PC and console platforms.

Its capabilities span pre-production, game design, gameplay programming, combat engineering, environment modelling, concept art, animation and post-launch support. Its technical experience includes Unreal Engine development alongside its earlier Source-based work, with both single-player and cooperative PvE design represented in its specialisms.

Return to independent publishing

Focus Home Interactive acquired a controlling majority interest in April 2021. The founding partners negotiated a management buyback in December 2024, publicly formalized in mid-2025, returning operational and creative control to the founders. Focus retained publishing rights to the legacy Space Hulk and Necromunda titles, while Streum On retained its own intellectual property, including E.Y.E.

The studio subsequently developed and self-published Daimon Blades, which entered Early Access on PC in October 2025. Described as an ancestral prequel to E.Y.E: Divine Cybermancy, the game carries the studio’s first-person combat focus into a dark-fantasy slasher setting.