Order of the Sinking Star Demo Length and Puzzle Count

The demo has two numbers that both need a source attached. The puzzle count has an official figure and a shipped figure that do not match. The playtime is a spread across four or five reports, and the honest answer is to show every figure next to the reason it exists.

Quick Answer

The demo shipped with 105 puzzles, with Phase 1 accounting for 75 of them, while official copy said “around 110 levels” and was never corrected. Its length does not have a single answer: IGN’s reviewer cleared all available levels in about 4 hours, The Gaming Outsider measured 15 hours across 105 puzzles, TechTimes summarised it as “15 to 50 hours”, and players report 8.4 and 6.5 hours. The “50 hours” figure that circulates is a misreport of a 40 to 50 hour estimate attributed to Jonathan Blow that cannot be traced to an original interview.

The puzzle count: two figures, and the 105 that shipped

The demo’s puzzle count is not one agreed number. Two figures compete, and both belong on the page: what the developers published, and what the build actually contains.

The shipped figure is 105, and it is reliable for a specific reason: it is a count, not an estimate. The demo’s load-save screen displays a puzzle total, so players who finish can read the number rather than guess at it, and independent reports converge on 105. The community map project records the same split the save counter implies: 75 levels in Phase 1 and 105 after the June 19 Phase 2 update.

Official copy never caught up. The June 15 FAQ’s “around 110 levels” and the June 19 post’s “over 100” are still what the published material says, even though the build players are running contains 105. That is why both figures stay on this page instead of one replacing the other, and it is why the count is a two-count question rather than a settled one.

Official source: Play The Demo Now! (June 15, 2026 FAQ)

[!tip] Phase 1 is exactly 75 puzzles, which explains a community complaint that otherwise sounds arbitrary. The notorious “75th (mirror) puzzle” is the last puzzle of Phase 1, not a random mid-game difficulty spike. The players who call it harder than the previous 74 combined are describing the final gate of the original build, and the people who report being stuck at 74 of 75 are stuck at the same wall.

One more figure floats around: a claimed 106th hidden puzzle, a red-marked Overworld meta-puzzle. That claim is single-source and unconfirmed, so it does not change the demo’s count; the demo secrets page tracks it with the right label.

[!note] The demo is a separate Steam app from the full game, app 4597250, and it is free. As of September 23, 2026 it held a 4.5 out of 5 rating across 1503 reviews on the Steam API.

The playtime figures, and where they come from

Here is the spread in full. None of these figures should be presented as the answer, and none of them should be quietly dropped because it is inconvenient.

The one figure to retire is “50 hours”. It circulates as a developer claim about the demo, but what is actually reported is a 40 to 50 hour estimate attributed to Blow around the demo’s launch, and the original interview or video containing it could not be located. The outlet that repeated it also calls it an exaggeration next to its own 15-hour measurement. Treat “50 hours” as a misreport: it is neither a direct quote nor an official figure, and it should never be printed as either. The 40 to 50 hour version may be described only as reported.

Notice how the full game’s numbers behave compared to the demo’s. They do not contradict each other; they answer different questions. The store’s 1000-plus and Blow’s 1400-plus are both puzzle counts at different moments of development. The FAQ’s 500-plus hours is a completionist figure and Blow’s 250 hours is a main-path-at-Normal figure. Once the question is stated precisely, the numbers stop competing.

Why the demo shipped in two parts, and why that explains the gap

The demo launched on June 15, 2026, during Steam Next Fest, and it was originally a Next Fest demo. On June 19, 2026 it received a content update that Blow referred to as Demo Part 2, adding two playable heroes, the Bard and the Druid, along with new puzzles, new areas, and the first content where the game’s worlds collide. Then, on June 22, 2026, the team posted that the demo would stay available longer rather than disappearing with the festival. It was extended twice in total: first to June 26 in a Steam news post, and then to July 31 in an official social post rather than a Steam news item.

That timeline is the single most likely explanation for the playtime spread. Someone who played the demo in the first four days measured Part 1, which was 75 puzzles. Someone who started after June 19 measured Part 1 plus Part 2, which is the 105-puzzle build. Those are different amounts of content wearing the same name, and a page that reports one number without the date is reporting a version, not the demo.

There is a second reason the numbers spread, and it has nothing to do with the update: definitions differ. Finishing the demo can mean reaching its end, or it can mean clearing every puzzle in it. Those are different tasks, and 105 puzzles are not evenly distributed across them. The demo’s puzzle count is fixed; the distance to “done” depends on which done you mean.

A third reason is simply that the figures are self-reported. Nobody in the community is running a controlled measurement, and review playthroughs routinely include note-taking, rewatching and testing alternative approaches, which inflates time relative to a casual run.

[!warning] Demo playtimes are self-reported and not comparable to each other. They were measured on different demo versions, by players with different definitions of completion, and in some cases for different purposes. Use them as a range, never as a specification.

What the demo actually contains

Both demo parts were released before the game’s October 8, 2026 launch date, and the demo was still available as of September 24, 2026 rather than being pulled after Next Fest. Three worlds have playable demo content: the northern Heroes of Hauling and the eastern Mirror Isles as full routes, and the western Promise as a single level rather than a region. The southern Skipping Stones to Lonely Homes is not in the demo at all, which IGN, The Gaming Outsider and the creators.gg campaign brief each confirm independently.

Players report that the hardest puzzles in the demo are the Mirror Isles ones, which is consistent with the eastern world being the demo’s late-content wall rather than its opening. There is also a widely shared anxiety in the community about whether a player has seen everything, which is a reasonable worry in a game that does not tell you its own totals.

The full game is a different scale entirely

It is worth separating the demo’s hours from the full game’s, because the two are frequently quoted in the same sentence as if they were comparable. They are not. The demo is a slice of a game whose official puzzle count is over 1000 and whose most dedicated completion is described in hundreds of hours.

The practical takeaway for anyone planning time around launch: the demo tells you whether the mechanics click, not how long the game is. For the world-by-world structure, see the Overworld map guide, and for the mechanics you are sampling, start with how to read a puzzle grid. If your real question is whether the time you invest now survives launch, that is the progress carry-over page. For what is inside the demo beyond raw counts, the demo walkthrough covers the structure.

Related

• Does demo progress carry over to launch? — the question that decides whether demo hours are worth spending
• Demo walkthrough — what Part 1 and Part 2 actually contain
• Overworld map guide — how the four routes and the fog connect
• How to read a puzzle grid — the transferable skill behind every demo puzzle
• Gold Rooms explained — the late-game structure the demo does not reach

This page is re-checked at launch, when the full game’s puzzle count and length can be verified against the store and the shipped build.