Question How do publishers create bundles for sale whose size is just some few kilobytes?

So, when you browse the bundles category in asset store, you see some creators with a pack (bundle) of say, 3d models whose size together can be in their gigabytes. But surprisingly, such a bundle will be like just 14kb. When you look at the package content, you mostly see only some Readme.txt file.

I wanna know how they do it.

Do they paste voucher codes of the individual assets, or create some link to that contains all of them together to download say from google drive? Or what?
Please help.

 

Hi,

There is a upgrade system that can enable upgrade from an asset to another for any price or for free within a publishers assets.

So most bundles just enable a free upgrade from the empty bundle asset.

I have gone with a slightly different approach for the Environment Building Bundle, i do about same as described, but add a small price to the Lite upgrades on each package, in order to support the individual assets better.

 

Thanks but can you please explain to to do it?

 

Sure, in the publisher page there is an Upgrades option, choose this to define upgrades between packages and the price.