Valve's rating system for Steam Deck and SteamOS seems to have sped up recently, with 20,000 games now rated at least playable. Previously they hit 19,000 in May, 18,000 in March and 17,000 in November 2024.
If a game is at least Playable on Steam Deck, it will also be compatible with SteamOS. The ratings for SteamOS are a bit different to how it's done on Steam Deck with less being checked. The main point for the SteamOS rating is that the game will actually load up and be playable, but performance and features will depend on the specific device you have SteamOS on. Compared with Steam Deck where performance is supposed to be checked along with full controller support, resolution and more.
Games that were recently rated 
Verified include:
FBC: Firebreak
The rating is not actually live on the store yet at time of writing but it will be soon
FANTASY LIFE i: The Girl Who Steals Time
Rune Factory: Guardians of Azuma
And some that recently hit 
Playable:
The Alters
Small text on Steam Deck
Dune: Awakening
Small text on Steam Deck
Check out my previous initial review
After Inc: Revival
Small text on Steam Deck and it may show the wrong controller icons.
Slayaway Camp
May show the wrong controller icons and manual on-screen keyboard.
Nubby's Number Factory
Small text on Steam Deck, manual on-screen keyboard and it may show the wrong controller icons.
I really do love this one
There have been issues with the ratings in the past. Overall though, the rating is just to show you what should be playable. People have pretty wildly different feelings on what is "playable" though. It's not a perfect system but even on traditional consoles games slip through that don't work well. Hopefully Valve will continue tweaking their tests over time to make them as accurate as possible.
Given the unique nature of Steam for Linux systems like Steam Deck / SteamOS, this is only counting games that have actually been tested. Many more will be playable.
Article taken from GamingOnLinux.com.
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ElectricPrism 3 days ago
Last edited by ElectricPrism on 13 Jun 2025 at 5:45 pm UTC
Stella 3 days ago
I feel like some of us should bake a celebratory cake and tag @Steam and @ValveSoftware in a picture of itBut THE CAKE IS A LIE
In all seriousness though, 20K games is extremely impressive
Remember that PS4 only had 3,500 games, and Nintendo Switch only has 6000 titles. Both consoles have existed far longer than the Steam Deck though
mi1stormilst 3 days ago
Dana Souly 3 days ago
Alm888 2 days ago
Meanwhile, if you install Windows™, there will be 100% of the PC games available.
Liam Dawe 2 days ago
And no, Windows actually cannot run them all, Windows does have its own compatibility problems too. Far less, but issues do still exist. Not sure why you're pointing it out though, we all know the hill Linux gaming has to climb here.
Last edited by Liam Dawe on 14 Jun 2025 at 8:18 am UTC
The gap is not that big. The important issue at this point is not so much actual incompatibility, it's more the anti-cheat situation.
Last edited by Purple Library Guy on 15 Jun 2025 at 5:47 pm UTC
pleasereadthemanual 12 hours ago
A portion of DLsite's games are unplayable on Linux if they use DRM other than PlayDRM. And physical editions of visual novels, if they are encumbered by DRM, usually don't work either.
I haven't tested them, but I would be very surprised if Johren's visual novels worked either.
Still, that leaves you with a lot of visual novels from DLsite and Steam to play.
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