How to make a patch for a unity game?

Question

Unity

There is a free version of the game without any content, how to make a patch so that just when buying the full game, the user throws the files into the game folder so that all the content appears in it?

Answer 1

ДемоРежим = да;
если ВсеФайлыДляПолнойИгрыПрисутствуют то ДемоРежим = нет;

Answer 2

In short, I found AssetBundles, this is what I need.