Providing builds for all platforms was the original intention, but we got close on time so we decided to play it safe. We will be providing the other builds once the jam rating period has ended.
In the mean time, if you are familiar with the Electron framework, you can run an Electron instance with the <itch_games>/anticipainter/resources/app.asar file as the path and the game should run! (this way, you know you are using the same version of the game as everyone else)
Happy Anticipainting!