RichardHallas: I've recently got an iMac running Catalina 10.15.7 (final release) and Victor Vran just crashes on launch for me. Anyone else running it successfully on this OS? (Or, indeed, on Big Sur?)
Not an independent opinion but a different machine and OS... I just downloaded and installed on a 2017 MacBook running Big Sur, and the game launches to the configuration screen without crashing. It doesn't display properly (uses only the bottom left corner of the screen), but that may be because the MacBook's integrated graphics don't meet the game's requirements. Definitely not a 32-bit crash, though.
Good luck.