Certainly, something interesting is going on there! Took me a while to understand how to play...
Would be nice to have small bits of guide / onboarding in game, at least maybe as an alert / popup, since game being launched in separate screen and going back to a page is a bit of hustle when you are in game :)
I've also triggered an exception in like 5 minutes of gameplay, not sure exactly what it was, but game seemingly kept going after that..