The Witch Simulator targets Steam Deck and Linux via Proton for mid-2027 launch

Altus Ludus, a Serbian solo developer, has announced The Witch Simulator, a medieval fantasy crafting and combat game scheduled for Steam release in mid-2027. The title features potion brewing, beast hunting, quest completion, and broom-based flight across multiple biomes, with both solo and four-player online co-op modes supported by integrated voice chat. The developer has stated that Steam Deck support is a launch goal, with the game intended to run through Steam Play using the Windows build rather than a native Linux port. While the developer has not previously prioritized native Linux support, the topic is now under investigation following community interest. A free demo is planned for Steam Next Fest in February 2027, which will provide the first opportunity to assess Proton compatibility and performance on Linux systems.

The game employs a fluid-based elemental magic system where spellcasting carries detection risk from the Inquisition, a faction that can raid players if magic use becomes too visible. Players can adopt multiple roles including bounty hunter, potion master, or beast hunter without class restrictions. The narrative culminates in a confrontation with the Grand Inquisitor. The title will launch with support for 14 languages and is built in Unity, which has established Proton compatibility profiles but does not guarantee smooth Steam Deck operation without specific optimization.

Steam Deck and Linux support status

• Proton-dependent launch plan: The developer explicitly states the game will reach Steam Deck and Linux through Steam Play running the Windows build, with no native Linux version currently planned.
• Unity engine foundation: The game is built in Unity, which provides cross-platform export capabilities but does not automatically ensure Linux-native builds or optimal Proton performance without dedicated testing.
• Steam Deck verification gap: The developer has not pursued Steam Deck Verified status, and handheld optimization remains an unfulfilled goal rather than a completed certification.
• Native Linux under evaluation: The developer acknowledged native Linux support was not previously considered but is now being investigated after raising community awareness, with no commitment made.
• Demo timing for compatibility data: The February 2027 Steam Next Fest demo will be the first public test of Proton behavior, making it the critical milestone for assessing Linux and Steam Deck playability.

Why it matters

This announcement illustrates the continued reliance of indie developers on Proton as the primary path to Linux and Steam Deck compatibility, reducing incentive for native ports even among smaller studios. The developer's openness to investigating native Linux support following community engagement shows how player advocacy can shift technical priorities, though Unity's cross-platform tooling often makes Proton the path of least resistance. For Steam Deck users, the lack of Verified status and unproven Proton performance at announcement means this title joins a growing category of 'intended compatible' releases where actual handheld experience remains uncertain until public demo availability.