Does an Unsupported rating mean it will not run?

No. Unsupported is a verdict about the out-of-the-box experience against Valve’s fixed bar, not a compatibility block — the game installs and launches, and the developer said in the same reply that you could presumably play it start to finish. What it actually does once running is measured on our Steam Deck page.

Why is SteamOS rated Playable when the Deck is Unsupported?

Because Valve rates them separately. SteamOS is the software and the Deck is a specific piece of hardware with a fixed performance bar — the failing test result is graphics performance, which is a hardware question.

Unknown, but two of the five announced first-patch items — larger text and a Performance default — match two of the three failures the developer said the Deck review flagged. That is our inference, not a statement by anyone.

Is there a native Linux build?

No. Steam reports the game as Windows-only, so everything on Deck and SteamOS runs through Proton.

Is Beast of Reincarnation Steam Deck Verified?

Q: Is Beast of Reincarnation Steam Deck Verified?

No. Valve rates it Unsupported — the bottom of the four-rung scale — on a single test result, graphics performance.

No — and the accurate word is harsher than "not yet". Valve rates it Unsupported, on one failing test result, and the developer's own forum answer is softer than the category Valve assigned. Whether it is worth playing anyway is a different question with a different answer.

Applies to 17 September 2026 updateUpdated September 2026

By Beast of Reincarnation Guide Editorial Team

Image: Official February 2026 pre-launch marketing screenshot, Xbox store gallery (product 9NXWSWBM4H6T, 3840×2160), read 2026-08-05

Short answer

No. Valve rates it Unsupported on Steam Deck — not merely unverified — on a single test result, graphics performance. The same rating call returns Playable for SteamOS and Verified for Steam Machine, so this is a Deck-hardware verdict rather than a Linux one. It is still worth knowing that the badge and the experience are different questions: a specialist who measured the game got about 30fps and called it playable, and that has its own page.

Where this is being asked · Steam Community, in the thread "Steam deck verified?", opened by Smasher89 on 30 July 2026 — before launch — and answered by a developer the same day. It is also the first thing asked of any Game Pass or Steam release that a handheld owner is considering.

Answered? Next · Steam Deck: 30fps, two and a half hours, and nothing to change · Best PC settings · PC troubleshooting by symptom · Known issues tracker · When is the patch

Evidence

The answer, broken into claims

A grade describes sourcing, not truth. Inferred means we concluded it and the reasoning is shown; unverified means someone asserted it and nobody stands behind it.

OfficialValve rates the game Unsupported on Steam Deck, on one test result: graphics performance.
Valve’s hardware compatibility endpoint, captured 2026-08-06. Category 1, token `#SteamDeckVerified_TestResult_UnsupportedGraphicsPerformance`.
OfficialThe same call rates SteamOS Playable and Steam Machine Verified; Steam Frame is not rated.
Same endpoint, same capture. Three devices, three different answers — a Deck-hardware verdict, not a Linux one.
CorroboratedThe category numbers mean 1 = Unsupported, 2 = Playable, 3 = Verified.
Re-derived on every sync from five settled titles (Portal 2, The Witcher 3, Red Dead Redemption 2, Destiny 2, PUBG), and independently confirmed by the developer describing the same two other categories in words on 30 July 2026.
OfficialA developer said the game went through one round of Deck review and failed on text size/contrast, default performance, and Deck UI/input.
Sam [developer], Steam Community, 30 July 2026 at 8:33pm.
UnverifiedIt runs at roughly 30fps on Deck at Low with FSR1 Performance, for about 2.5 hours of battery.
Steam Deck HQ, 3 August 2026. One outlet’s measurement on one unit, untested by us, and the only published figures that exist.
InferredThe announced first patch appears to target two of the three Deck review failures.
Our own reading: increased text size and a default graphics change from Cinematic to Performance are two of the five announced items, and text size and default performance are two of the three failures the developer named. No statement connects them.

§01

What Valve actually says, per device

Read from Valve's own hardware-compatibility endpoint on 2026-08-06, not from a badge screenshot. Valve rates four devices separately and this game currently gets three different answers: Unsupported on Steam Deck, Playable on SteamOS, Verified on Steam Machine, and no rating at all for Steam Frame. The full matrix, with the test-result tokens behind each verdict, is on the Steam Deck page — this page is about what the Deck verdict means, not about what to do with it.

§02

Why "Unsupported" and not "not yet Verified"

Those are different verdicts and the distinction is the point of this page. Valve's scale has four rungs — Unknown, Unsupported, Playable, Verified — and a game that merely failed review sits at Playable or Unknown. This one is at the bottom rung, on one stated reason: graphics performance. Every guide site answering this question is quoting the developer's forum reply, which says "not yet", and that reply is accurate about the Verified badge while being softer than the category Valve assigned.

§03

How we know what the numbers mean

Valve publishes the category as an integer and documents nothing. So the sync script behind this page re-derives the mapping on every run rather than repeating folklore: it queries five titles whose public badge is not in dispute — Portal 2 and The Witcher 3 for Verified, Red Dead Redemption 2 for Playable, Destiny 2 and PUBG for Unsupported — and refuses to write a snapshot if they ever stop agreeing. That yields 1 = Unsupported, 2 = Playable, 3 = Verified. The developer's own reply then confirms it from the other direction: they wrote that the game is "Compatible with SteamOS" and "Rated as Verified for Steam Machine", and those are exactly the two categories the endpoint returns as 2 and 3.

§04

And what someone who measured it found

Steam Deck HQ published the only measured Deck numbers anyone has, and their verdict was "not going to be a perfect experience, but it will be a playable one". That is a genuine disagreement with Valve rather than an error by either — Valve is rating the out-of-the-box experience against a fixed bar, and a specialist is reporting what the hardware does once the settings are down. Both are true and they answer different questions. The figures, the settings panel they came with and the per-device breakdown live on the Steam Deck page rather than here, because "what will it actually do" is not the question this page was asked.

§05

The first patch appears to target the Deck review, though nobody has said so

The developer named three things the Deck review flagged: text size and contrast, default performance, and Deck-specific UI and input. Two of those are items one and four of the five announced for the first patch — increased text size, and the default graphics setting changed from Cinematic to Performance. Nobody has connected those publicly and no statement links them, so this is our inference and it is graded as one. If it is right, the rating is a candidate to move after the patch rather than a settled fact about the game.

Expiry condition

What would have to change for this answer to be wrong

An answer about a live-service game without this is an answer with a hidden expiry date.

Valve re-rates it. That is one integer on one endpoint and this site re-reads it on a script, so the answer here moves the day it does. The first patch is the obvious trigger, given two of its five items match two of the three review failures the developer named.

Citations

Every source, with its date

A complaint posted before 30 July 2026 describes the playtest, not the game you bought, and a source whose publication date nobody captured cannot show that it postdates launch either. Both are flagged rather than quietly mixed in.

Steam hardware compatibility report for App ID 2001760official2026-08-06
Valve’s own rating for all four devices, with the test-result tokens behind each. Keyless, and the identical payload is embedded in the store page as `data-hardwarecompatibility`, so it is the number the badge is drawn from. Captured by our sync script on the date shown.
Steam Community — "Steam deck verified?"community2026-07-30
That Sam [developer] answered on 30 July: "Short answer: not yet. Went through one round of Deck review and found some specific issues that need to be fixed or improved before it can get Verified," naming text size and contrast, default performance and Deck-specific UI/input, and adding "you could presumably play it start to finish". The same reply states the game is Compatible with SteamOS and Verified for Steam Machine. Read 2026-08-06.
Steam Deck HQ — review and Deck performancepress2026-08-03
The only published measurements on Deck hardware: ~30fps on Low with FSR1 Performance, 18–23W, ~2.5 hours of battery, 75–80°C, 3/5 Deck Build Score, verdict "not going to be a perfect experience, but it will be a playable one". By Noah Kupetsky. Read 2026-08-06.
Steam appdetails API — App ID 2001760official2026-08-06
That the Steam build is Windows-only — `platforms` reports windows true, mac false, linux false — so everything on Deck and SteamOS runs through Proton rather than a native port. Also that the game carries the Steam Cloud category.