When Valveās Steam Deck launched back in February, it could only certifiably run a (relative) handful of the platformās 1000s of titles. The exact number was 399, but now, just a few weeks later, that figure has roughly tripled.
On February 25, the day of the Steam Deckās launch, there were the 399 I just mentioned, plus roughly 300 more that were listed as āplayableā but still might have some issues. Note that this list included games that ran fine, but had been designed with a big monitor and mouse in mind, and so maybe werenāt the best experience on a handheld device.
Anyone buying the Steam Deck in February (or earlier, really, since to get one then you would have had to pre-order back in 2021) might have been concerned with the size of that list, and the fact that some of the biggest video game series around werenāt going to be playing nice with their new handheld.
Now that weāre in early May, things have already vastly improved. There are a number of places you can track the numbers of games playable on the system, but Boiling Steam have been putting them in chart form, so thatās what weāre looking at today

As you can see, things mostly shot up during March and have slowed down since. But Iām looking at this as more of a āhow far things have come since launchā kind of deal, not just an examination of the last couple of weeks. At time of posting, there are now 1,289 games that are fully verified, and a further 1,169 that are playable.
In practical terms, letās apply those figures to my own Steam Library, since thatās how I took an informal look at support back when the system launched. In February, only 59 of my 810 Steam games were fully verified; now 131 of them are. Thatās progress!
Which leads me to: this doesnāt mean games not on the list donāt work at all. It just means they havenāt been fully tested yet, so you can expect this number to keep on climbing as more results come in. And if you want to keep track of this stuff,Protondb is another great place to bookmark.