PC demo: official facts only

Steam demo app 4597250

Steam lists a separate demo app, Order of the Sinking Star Demo (4597250), developed by Thekla, Inc. and published by Arc Games and Gamirror Games. The demo appdetails payload marks Windows true, Mac/Linux false, type demo, and a release date of Jun 15, 2026 (coming_soon false). The parent game page also lists demos pointing at app 4597250.

Steam Next Fest window (publisher copy)

Arc Games’ 10 Jun 2026 post said a playable demo would run globally from Monday, June 15 at 10 a.m. Pacific Time until Monday, June 22 at 10 a.m. Pacific Time as part of Steam Next Fest: June Edition. The demo store page still frames that Next Fest window and says to try the demo today. Whether the build remains downloadable in your account is a live Steam state, not something this static atlas can guarantee.

Unknown beside this fact: Exact remaining demo length, which worlds are in the build, and puzzle counts inside the demo are not itemized on the cited pages.

Voice disclaimer and save carryover

The demo store page states that the demo may mix human-recorded voiceover with optional placeholder computer-generated voice, and that the full release will feature only human-recorded voiceover with no AI generated content. Gematsu reports that save data will carry over to the full release. This atlas did not independently test carryover.

Unknown beside this fact: Which slots, platforms, or cloud IDs participate in carryover is not specified on Steam app 499170.