It looks like the file for the mac download may not work – trying to open it gives me a popup saying the file is damaged and needs to be deleted. The game looks awesome though!
Viewing post in Paw Pop Breakout (Demo) comments
Thanks for your patience and glad you’re excited about the game! I wrote a max version fix guide in the development log section. But if the issue persists or you don't want to tweak with the security, feel free to try the game on Steam. Right now it says "join the playtest", clicking on it should straight take you to download.