How to separate game assets from installer?

i’m sorry if the question seems vague. anyways, this is what i am hoping to achieve:

example, i have an already finished android game worth about 1gb. i want to place all the assets on a site. is it possible to make just an installer and just download the rest of the asset on installation? if so, how do i go about this?

thanks in advance!

Yes, you can create asset bundles for your assets and store them on the server. When your game runs, it can download all/required assets from server and use them.

Here is unity’s documentation about assetbundles.