zavenous: Hello Human,
See the screenshot I made for you - I only see if from "My collection" which I don't know how to access directly in GOG Galaxy 2.0 so I go the long way to get here - so will you.
Basically you locate in your collection and go to the Extra section of it.
Ohh, alright, got it, but why isn't it merged to the "extra" section of the main game after claimed ? Would be very helpful to feature this for gog galaxy. Also having to search the goodies pack in the store just to click "go the library" to see it is so bad, I wish this library like we see it in the browser was available in gog galaxy through hot button. In the galaxy client library you can't even sort by purchase date.