itch.io

Just got the Limited Edition, but sadly I don't have a way to get the 3DS version without buying it again (cries inside). It's a great demo, so surely will be a great game. All the best!

To make it work on macOS, you need to find the application "A Short Hike", right-click to "Show Package Contents", and then drop it on the "Contents" folder. This made it show up on the options.