Dressmaker platforms: PC, Mac, Steam Deck and what is coming
Dressmaker is on Steam for Windows and Mac. It is played with a mouse and keyboard, and Steam lists a mouse-only option. Everything else is either planned or not announced.
Windows
Out
On Steam. Windows 10 or later, Intel Core i5 or AMD Ryzen, 8 GB RAM, Intel UHD 630 or better, 1 GB of space.
macOS
Out
On Steam. Apple M1, 8 GB RAM, 1 GB of space.
Steam Deck
Runs, not recommended yet
No controller support yet and not Verified. See the developer’s answer below.
Linux
Not a listed platform
The store page carries a Linux requirements block, but Steam does not list Linux as a platform. The itch.io prototype does have a Linux build.
PlayStation, Xbox
Not announced
The launch post names Switch and mobile as its planned ports and neither console. A Steam thread asking about PS5 has no developer reply. See a Steam discussion asking about a PS5 release
Requirements are the store page’s minimums. Listed on the Dressmaker Steam store page

Steam Deck and controllers
“I'm a dev, and would not currently recommend it on the Steam Deck.” “It runs smoothly, but the controls are finnicky.”
From a developer's answer on r/Dressmaker about the Steam Deck
“The game doesn't have controller support at this stage. (The game isn't Verified.)” “You should be able to remap a button to zoom (Z or middle click) using a custom controller profile.”
From a developer's answer on r/Dressmaker about controllers
Controller support is on the studio’s list of post-launch work; see patch notes. Deck players in the same thread describe mapping middle click and Z, and one says sewing without Sewing Assist was a struggle; that setting is on getting 100% quality.
Languages
English, Simplified Chinese and Japanese, each marked on the store page as having full audio support.