Thanks for your understanding, but... you have to do it quickly, because the refund is probably available for a few days? Otherwise you won't be able to return the game. For example, on Steam or Epic you have 14 days to refund, I don't know about Itch.io.
Anyway, check out the new version https://airem.itch.io/the-impossible (THE IMPOSSIBLE Mac 64 alternative version - 160MB) and let me know if it works, if not:
1) Make a refund or write to me info@airem.pl I will give you another game
2) Alternatively, there is a way to run THE IMPOSSIBLE without any problems, but you must write to me info@airem.pl (I will send you instructions... :P)
3) Another option is to run VirutalBox or Virtual Machine to run Windows and download THE IMPOSSIBLE for Windows from Itch.io
I remember when Apple deprecated/not supporting OpenGL, problems started to arise, but I don't know if that's the reason ¯\_(ツ)_/¯. (https://developer.apple.com/forums/thread/694866)
Viewing post in THE IMPOSSIBLE ( ͡° ͜ʖ ͡°) comments
Hi Airem.
Have tried the alternative version and it works just fine. Many thanks for solving this so quickly for me, that's what I call excellent customer service!
A note for any other Mac users. Mac OS will refuse to open this game initially as it is from an unidentified developer. Simply open System Preferences, go to Security & Privacy, and you will be given the option to open the game anyway. You only need to do this once and then you should be able to open the game as normal.