I got a lot of inspiration for the model style (and a helpful making-of timelapse) from @librorumque on Twitter: https://twitter.com/librorumque/status/1205080756508352512
The white rectangle is a loading bar - it should stretch across the bottom of the screen as the game loads. I've had it hang once or twice, but a page refresh fixed the issue in those cases.
I got a lot of inspiration for the model style (and a helpful making-of timelapse) from @librorumque on Twitter: https://twitter.com/librorumque/status/1205080756508352512