Install the full game from Steam
Open the official Steam listing, confirm compatibility and your regional price, purchase the game, and install it from your Steam library. The store lists Windows and macOS requirements.
Open SteamInstall Prototype 0.5.5 from itch.io
Click Download Now on the developer’s page, choose your operating system, download the archive and extract it before launching. These are the listed prototype packages, checked September 26, 2026.
Windows / 115 MB
Dressmaker Prototype Windows 0.5.5.zip
macOS / 128 MB
Dressmaker Prototype OSX 0.5.5.zip
Linux / 127 MB
Dressmaker Prototype Linux 0.5.5.zip
macOS prototype notes
The prototype is not notarized. For an archive obtained from the developer’s page, their Mac instructions say to open System Settings → Privacy & Security → Open Anyway, then confirm Open. This note applies to the prototype, not an assumed Steam installation problem.
Check compatibility before installing
Consult the live Steam requirements for the full release. The older prototype has separate Windows, macOS and Linux archives; its availability does not establish full-release Linux support.