As of January 1, 2022, we no longer support most of our Mac releases. If you've purchased a game to play on Mac, we'll do our best to make sure you'll still be able to download it. However, we don't plan to do any further updates, fixes, or enhancements to those versions. This also means we will stop advertising Mac support on store pages.
Full details and an FAQ can be found in the original announcement. If your questions are unanswered, feel free to ask in the comments or write info@futureproofgames.com.