The demo exists separately from the full game

Steam has a Download Demo entry, and the publisher also lists a demo option. These establish a trial offering. They do not identify the exact executable build or which external package, if any, is designed for it. For the separate full-game update question, see Patch Status.

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Pending confirmation: a demo-specific package

A verified answer needs official instructions that name the demo and the supported version. The collected materials do not provide that match. Do not treat a full-game build record or historical guide as proof that a package will work with the current trial. For identifying the official game edition, see Steam Edition.