Question regarding usage of public domain assets

Hello,

I am currently working on a complete 2D Sidescrolling project for the Unreal Marketplace.It is now approaching completion and I would like to sort a few things out before submitting it. The project is done entirely in blueprints and a lot of work was done to make it as modular and as easy to edit as possible. While working on the project I have acquired quite a decent number of public domain sprites and sound fx. A lot of them had to be edited and cleaned up in order to be compatible with each other.
Initially I wanted to release the sidescroller kit with only the bare minimum of sprites for it to work.
Now I am considering keeping all the public domain sprites and sfx and including them in the project in order to allow people to prototype a variety of levels as fast as possible.
I did read this :

It is worded a bit vague and I want to double check if I should bother including and polishing additional assets.
The blueprints for the game are made entirely by me.
All the assets used are redistributable under CC0-CC3 with credits and links to the licence for each of the.

So bottom question is : Does including public domain sprites and sfx into my complete sidescrolling game kit allow me to sell my project in the marketplace?

Did you do the first 3 steps? What percentage of your game is made with public domain assets?

All the sprites used are public domain. All the game logic, gameplay and interaction is made by me. How do you quantify that?

That is a good question. To get a better feel for it, what kind of features does the blueprint have and how many sprites are you using? Just enough to show off the game features?

Not sure what Epic’s policies would be, but if you had ladder logic, including a ladder is fine; guns and particles, include those; water physics/drowning, include some water; AI, have some enemies; character powers, have a playable character. Basically for each feature you have, have use a PD asset as a place holder so they can just drag and drop it in to have it going right away and let them swap in their own art easily once they can. Let your blueprints be the star and the sprites give your bp a basic physical form.

Again, not sure what Epic would deem acceptable.

If all requirements are met then everything is okay, however I think Marketplace team will judge if usage of these assets is okay or drawing more attention than your blueprint system.
Basically your original content should have more “weight” than public domain content.

Hmm thanks for the responses. I’l proceed ahead with the project and hope it’s fine.