Hi, I have a mac and have also ran into issues launching itch.io games before so I have become accustomed to looking into game files to find the problem. Unfortunately this game wasn't an easy fix like previous ones because it seems that the file needed to run the game is not a "unix executable" file. There is no way for mac user to play this game because the file is not unix executable, and instead only appears as a text file. I don't know how to solve this issue because I am not familiar with the software the game was made with, but hopefully this can help a little. I look forward to being able to play this game, so goodluck fixing it :)
Update: I converted the plain text file into a unix executable file (using the chmod +x command in terminal) and it still would not work. I believe there are still files missing that prevent just converting the file from working. This is the error message [9436:1123/152402:WARNING:shell_main_delegate.cc(231)] en-CA.pak file not found. [warn] kq_init: detected broken kqueue; not using.: Undefined error: 0