When I run the game, I get this error: "Uncaught abort(169). Build with -s ASSERTIONS=1 for more info." I got it to work once but the tab closed out of nowhere.
Encountered it as well now - So far my troubleshooting is this:
If you press buttons before the main menu appears, the game will try to load things that are still beeing generated - thus the error. If you wait for the Main Menu it should run fine - hope that helps!