Hi! I'm getting this error on the mac version:
> “NotItSE” is damaged and can’t be opened. You should move it to the Bin.
Hello, Thank you for letting us know about this issue. We've determined that the game is only displaying this error when you download the Mac OS version as a zip from Itch and unfortunately it's a known Unity issue. If you download the game via the Itch launcher or via Steam you shouldn't have this issue.
If you still want to download the game as a zip, you'll need to take some additional steps.
First, you can try moving the game to your Applications directory, ctrl + clicking, and selecting "Open."
In the event that this does not resolve the issue, you can take these more technical steps:
CTRL + Click on NotItSE.app
Click New Terminal at Folder
Type xattr -rc .
Then you should be able to open the game.