Release date and FAQ
RADIOSOL Chapter I is out (Sep 30, 2026) on Windows and Linux. US store listed $8.99 on October 29, 2026 with no discount. Later chapters arrive as free updates; the base price rises after Chapter II.
The living answer sheet for RADIOSOL's launch — date, chapter plan, platforms, requirements and the questions the community keeps asking, updated as official answers arrive rather than as speculation circulates.
The launch, in one table
| Question | Answer |
|---|---|
| Release date | September 30, 2026 (Chapter I) |
| Price | $8.99 on the US Steam store, checked October 29, 2026 (0% discount) |
| Platforms | Windows and Linux |
| Languages | 7: English, Russian, Japanese, Simplified Chinese, French, German, Spanish (Spain) |
| Format | Chapter I at launch; later chapters as free updates to the game, not paid DLC |
| Store features | Single-player, Steam achievements, stats, family sharing |
| Developer / publisher | TripletConcept (art), with Yodez (sound design), Hius (core development) and WhereaboutsUnknown (narrative) |
PC requirements
Straight from the store page, because nothing else is authoritative:
| Minimum | Recommended | |
|---|---|---|
| OS | Windows 10 (64-bit) | Windows 11 (64-bit) |
| Processor | Intel Xeon E5-2680 v3 @ 2.50GHz | 11th Gen Intel Core i7-11800H @ 2.30GHz |
| Memory | 4 GB RAM | 8 GB RAM |
| Graphics | NVIDIA GeForce GTX 1060 | NVIDIA GeForce RTX 3060 |
| DirectX | Version 11 | Version 11 |
| Storage | 4 GB available space | 4 GB available space |
Linux is listed as a supported platform alongside Windows; the full Linux table and a plain-language read on both spec sheets live on the system requirements page. The requirements above are the Windows spec published by the store.
The chapter plan, in the developer's own words
Asked whether the story would be sold piecemeal, the developer answered directly on the Steam forums: the next chapters "won't be sold as DLC, but will be released as updates to the base game," while "the game price will increase after the second chapter release." Practical reading:
- Buy once, receive the story in chapters — no separate purchases to follow along.
- If you want the lowest entry price, buying before (or around) Chapter II's release locks in the current price for the same content pipeline.
- Chapter I is the entire story available at launch; later chapters are dated closer to their release.
Will there be a demo or a playtest?
As of October 29, 2026 the store page offers no demo and no public playtest build. The pre-launch "Update 1" notes describe fixes made for testers (stuck spots, out-of-bounds gaps, tutorial text), so the build was exercised ahead of release — but nothing public was ever downloadable. If a demo appears, this page gets a section for it the same day.
Steam Deck and controllers
Straight answers are short here, so here they are: Linux is officially a supported platform, so the game needs no translation layer on that OS. Steam Deck status is not confirmed — Valve's compatibility rating is not published for RADIOSOL as of this update. Controller support is not listed in the store's feature list yet, and when a player asked in the forums, the thread did not receive an official reply. We are not going to dress that up: if you plan to play on a gamepad, check the current Steam feature list before buying.
Unlock timing
Chapter I launched on September 30, 2026. The store never published an exact unlock hour; the game is downloadable now. Steam lists 9 achievements as of October 29, 2026.
Launch week
With three days to go, the developers published a short launch-week note (September 27, 2026) confirming the September 30 date and reporting that RADIOSOL has entered Steam's top 1,000 most-wishlisted games. The note is candid about the road there — the release was postponed several times, and in their words "the game was rebuilt from scratch several times".
Patch notes and update history
Weather Update — October 26, 2026: weather alerts became functional; keybinding and sensitivity settings were added; spiders can walk on moving objects. Shadow rendering improved. Fixes cover disappearing solar flares, predictor trajectory instability, location-hint spam, messages received underground and duplicate file downloads. The post also reports the October 21 Odyssey progress fix.
Patch notes for October 8, 2026: an Invert Y option for looking around; new visual effects for suffocation and electric damage; sounds for some interactive objects; new location hints; the IIO console scroll position is preserved when you load a save; the radio quest was nerfed and its math puzzle removed — it "delivers a lot less pain now", in the notes' own words; several in-game texts rewritten. Patch notes for October 4, 2026: several frustrating ambiguities resolved; additional geographical hints; triggers widened; interrupted downloads resume; fixes for a digital signature softlock, a damage-saving bug, a life support core bug and a run/step animation bug; several traps, colliders and sounds fixed; in-game text and localization touch-ups; Steam achievement fixes; rendering optimizations. Update 1 — September 22, 2026 (final pre-launch pass): persistent radio markers; rewritten tutorial text; multiple stuck-spot fixes; out-of-bounds gaps closed; hazard tuning across the spider damage system (with the improved audio integration), the cognitive damage effect and Dust Devil behaviour; the Megapol lobby model brought up to final spec; new scare objects placed for unsuspecting players; new files added to the world.
Patch notes for October 1, 2026: Sphere exit softlock (leaving the way you entered) fixed; clearer navigation to the Sphere entrance and Service Depot; district names shown on every visit; Player.log growth and graphics performance addressed; wrong cardinal-direction hints and marker prompt corrected; localization typos.
Ready for the world itself? The beginner guide gets you through your first day, and the story page explains what the launch day patch is actually describing.
