I’m wanting to sell an asset, and the “demo scene” utilizes image effects. Can I include the image effects so that the user can use them (if they haven’t imported them)? I’m not selling the image effects (just bloom and antialiasing, which is what my demo scene uses), but am I able to include them or should I just let there be null references in my asset?
Short Answer : Yes
You can include them to your assets as long as it’s not your primary asset and doesn’t contain any trademarks, logos or branding which you do not own. It’s okay to use them as an Example packages or an explanation about how it works within another packages.
more information at Submission Guidelines section number 2.