NOSTRA JRPG demo launches on Steam with planned Proton compatibility

Runecraft Studios has released the first alpha demo for NOSTRA, a story-driven dark fantasy JRPG featuring tactical combat. The demo provides approximately two to three hours of gameplay and introduces additional difficulty modes, such as Hard and Hardcore, upon completion.

While the developer does not plan to release a native Linux version, they have committed to supporting Linux and Steam Deck users via the Windows build. The studio intends to conduct specific compatibility testing using Proton prior to the full game release, which is scheduled for November 2027.

Technical implementation and engine details

• Engine Architecture: The game is built on a custom engine called NeoEngine, which is a heavily modified version of RPG Maker MZ.
• Plugin Integration: Runecraft Studios utilizes approximately 140 in-house plugins to extend the base engine, with 82 specific tools managing combat, lighting, and parallax layers.
• Compatibility Path: Linux and Steam Deck support will be achieved through the Windows Steam build using the Proton compatibility layer rather than native binaries.
• Audio and Visual Features: The engine implements spatial audio, dynamic day/night cycles, and shifting light and shadow effects.

Why it matters

The reliance on Proton for Linux and Steam Deck support highlights the growing trend of indie developers targeting handheld gaming via compatibility layers rather than investing in native ports. This approach allows smaller studios to reach the Steam Deck audience while maintaining a single Windows-based development workflow.