itch.io

I believe this is because of the category, the copper pack is in the "assets" category. This pack isn't in the assets category however, it seems it doesn't have one at all

It now correctly has an installation target, but still thinks it's a game. The copper pack shows up as "A collection of assets" instead of "A game".

This incorrectly identifies itself as a game when using the itch.io client. It also has no valid installation target, the copper version doesn't have either of these issues. Downloading from the library on the website works as expected.