Project Solaris Demo → Full Game Migration

Thousands of players met Project Solaris through the free Steam demo (app 3400280) long before the full PC release on September 20, 2026. The demo taught the partnership fantasy—Solaris choosing days, Hom executing QTEs, Trust unlocking harder skills—but demo builds are not a legal contract with the 1.0 storefront. This page is the migration mindset: what demo patch history already changed, how to restart cleanly in the full game, and why progress transfer should be treated carefully. Start mechanical onboarding with Getting Started, refresh skill priority on Skill rankings, and keep calendar expectations aligned with Launch window.

Two different Steam apps

• Demo: Project Solaris Demo — app 3400280.
• Full game: Project Solaris — app 3002740.

Installing both is normal. Completing demo content does not automatically mean your hundred-day campaign, achievements, or inventory appear inside the full app. Treat them as related products that share systems language, not as one continuous cloud save unless an official post explicitly says otherwise.

Demo Ver.0.6 — the major systems jump

Greenhorn’s Demo Ver.0.6 update was a large mid-demo overhaul after a long quiet stretch. Official and developer summaries emphasized combat and teaching quality-of-life, including:

• Skill enhancement systems so Hom’s toolkit could grow beyond a flat unlock list.
• A much wider buff / debuff vocabulary — materials described the jump from a tiny early set (about 5) to a broad library (about 38). That expansion alone invalidates “I already mastered every status” demo nostalgia.
• Hom skill and animation updates that change how telegraphs and QTE timing feel.
• UI, reward presentation, and tutorial reworks so new players learn Trust and day cards with less confusion.
• Steam reviews enabled for the demo around that wave, inviting structured feedback.

If your last demo hours were on a pre-0.6 build, do not skip full-game tutorials. The partner you remember may already have been rewritten once inside the demo itself.

Demo V0.6.9 — saves, trees, scenarios, languages

A later demo drop labeled V0.6.9 (announced around the Lunar New Year 2026 demo push) added quality-of-life that makes migration conversations more confusing—because the demo finally felt “almost full”:

• Save function with one slot only — enough to pause, not a multi-route archive.
• Skill growth tree presentation closer to long-term build planning.
• Scenario viewer support for reviewing story beats.
• Bug fixes and stability passes.
• Language coverage called out as Japanese, English, Simplified Chinese, and Traditional Chinese on that demo update note.

The full Steam release additionally lists Korean among supported interfaces. Demo language memory is therefore incomplete for launch players who need KO UI.

Progress transfer — state this carefully

Japanese coverage on GameWith’s demo overview marked demo-to-product progress carry-over as none (引継ぎ無し). That matches the safe player assumption for most indie demos that ship as a separate app ID: do not expect demo saves to import into the full game. Even if a future patch adds a one-time import tool, you should plan a fresh full-game start unless Steam news explicitly documents a transfer path.

What you should carry:

• QTE click discipline and yellow-before-red habits.
• Respect for Trust as a combat stat, not flavor.
• Awareness that shopkeeping and crafting fund gear spikes.
• Preference for reading day cards instead of autopiloting.

What you should not carry:

• Exact skill numeric values from months-old demo builds.
• Assumption that a short demo ending equals full multiple-ending structure.
• Assumption that one demo save slot equals a full campaign archive.
• Assumption that every buff icon you never saw before is a bug.

Migration checklist for launch week

1. Finish or park the demo on 3400280; screenshot anything you want as a personal note.
2. Install the full game 3002740 and verify files once if downloads glitch.
3. Pick language in Steam before judging text pace.
4. Complete full-game onboarding even if you “already know” Hom.
5. Open Getting Started and draft a first twenty-day plan.
6. Re-read Skill rankings with Ver.0.6-era enhancement and buff density in mind.
7. Confirm store pricing separately if you are buying during the launch window—see Launch discount issue when the 10% anomaly is in the news.

Why demo muscle memory still helps

The demo’s job was always teaching the fantasy under lighter pressure. Full release adds the complete hundred-day calendar, broader achievement coverage (Steam lists 85 achievements on the full app), denser cast routes, and the long Trial cadence that demo slices could only hint at. Players who practiced QTEs in 3400280 usually die less to pure input panic—and die more to calendar greed—once the full clock is ticking. That is a good trade.

Use demo hours as a tutor for Hom timing, then rebuild your identity against full-game systems pages: Beginner builds, Hom, and the day planner.

When demo notes become misleading

Discard a demo tip when:

• It predates Ver.0.6 combat expansion.
• It assumes only a handful of buff or debuff types.
• It claims a save will continue automatically in 3002740 without an official transfer note.
• It treats demo maps or truncated calendars as the full hundred-day economy.

Keep a demo tip when:

• It teaches gauge colors and single clean clicks.
• It reminds you to raise Trust before stacking only hard skills.
• It warns that Solaris gear and Hom crafts obey different money philosophies.

Related launch reading

After migration planning, return to Launch window for day-one expectations, Updates Hub for the tracker index, and Links for Steam news, demo, and developer channels. If you are still deciding whether the fantasy fits, use Tools review before you spend money—especially during any storefront discount confusion.

Project Solaris rewards players who treat the demo as rehearsal and the full game as opening night. Relearn the stage, keep the timing, and start a clean hundred days.