Good news! I've figured out how to open it using a Mac (assuming that you're getting the error saying "The application "Lil Tribals" can't be opened." Bad news is that it's so many steps that it would be too much to type up, so I'll have to summarize with links.
The Lil Tribals app may need to be dragged onto the Desktop, but I'm not certain if that's required.
1. Open the terminal
2. Navigate to the folder containing the Lil Tribals app with the "cd" command
3. In the terminal, enter the command:
chmod a+x Lil\ Tribals.app/Contents/MacOS/*
At this point you should be able to open the app, but it may say "Lil Tribals cannot be opened because the developer cannot be verified." If so, you can either enter "sudo spctl --master-disable" into the terminal to allow all downloaded apps to be opened, or you can follow the steps in the thread below:
Hopefully this helps, let me know if you have issues!