If no root element is provided, create a 640x480 default.
If no root element is provided, create a 640x480 default.

thecocce/playn-1,playn/playn,thecocce/playn-1,playn/playn,tinkerstudent/playn,longtaoge/playn,ruslansennov/playn2,playn/playn,rachelharvey/playn,longtaoge/playn,tinkerstudent/playn,ruslansennov/playn2,rachelharvey/playn