1). Download the game .zip file via the link below and extract the folder to the desktop.
https://drive.google.com/file/d/11goYxNG_QYnZZ96daS-YZYYbVuTiqZly/view?usp=shari...
Try this version first and see if it runs any better for you. If it still has an unexpected error and closes, proceed to the next steps:
2). Download the normal version of NW.js and transfer the app to your computer's Applications.
3). Go finder > utilities > terminal and use the following command to launch the game (the "name" should be your username for the file path):
open -n -a nwjs --args "/Users/name/Desktop/Grove_0.204
Sorry it's a bit of a kludge, but give this a try and see if it works for you.