It should absolutely work on Mac! I'd recommend downloading the Itchio app on your Mac and then download the game through the Itchio app so it can launch the game directly, or try our Steam version. If you'd rather not (completely fine!), you should be able to access and launch the game using terminal.
If that's not working, I found this command that may be helpful (as I know next to nothing to how mac's terminal works)
"Open Terminal, write the following command:
chmod u+x
(make sure there's a space after x)
then drag the "Lost in Limbo demo" file and drop it onto the Terminal window, then press Enter. The file's icon should change. Then try opening the game again."
If you want to, feel free to send us an email over at gamesravenstar@gmail.com so we can review tour case in particular! Sorry we can't be of more help right now ;_;