i have 70 games and 71 scene.One scene is for menu. i have to do this when i choose a game only the asset of that games will loaded.

i have 71 scene and have 70 game . one is menu scene other 70 scene for particular game i want to reduce the build size(Build is for WebGL) with the help of asset bundle.I know how the asset bundle work i created the asset bundle of a scene but at the time of loading the scene will only load but there hierarchy is not( NO camera ,No canvas ,nothing is present in the Scene ) Loaded. I loaded my asset bundle from server i don't know how can i go further after loading the asset bundle from server so that after loading the asset and making the built the size will be reduce.