I'm sure I'm not the only one, who will appreciate it! Thank you!) I run Catalina 10.15.6 on a late 2015 13-inch Macbook Pro (256 Gb) if it helps in any way)) I can also send screenshots.
Love ya! Thanks, that helped! The OS still didn't wanna open the app as it is from an unauthorized publisher ( :-D ) and may contain malware, but this time I just allowed the app to open anyway in Security General Settings and it finally ran!) Thanks a lot for the effort, I'm sure others will also find this useful. I'm off to finally play your game) May the Force be with you!