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Cairn engine2026.10.2525 Oct 2026

The engine is called Cairn

The engine was Safi Studio and is now Cairn, with a redesigned editor and project hub, and a way to play a scene in a window of its own.

What's new

  • The engine is called Cairn. It was Safi Studio. The editor opens projects made under the old name and brings them over: new file extensions, and the hidden folder becomes .cairn. Every asset keeps its ID.
  • A redesigned editor. A new theme with Roboto and Go Mono, an icon set, and new versions of the top bar, viewport, hierarchy, assets panel, inspector, console, history, settings and dialogs.
  • The project hub in the new design: projects as cards or a list, templates, samples and a learn page.
  • Play in a window. The arrow after Step plays the open scene in the runtime program, in a window or full screen, unsaved changes included.
  • On macOS the window's title bar is merged into the editor's top bar.
  • Every page of the documentation has a search title, a description and a share picture.