Cool game! And - I don't know if I'm alone with this - the abstract ones were by far the easiest ones to do, as each one had at least one unique recognizable shape, whereas all the other ones boiled down to horizon, water, trees and clouds (and windmills in the other one).
hey, thanks for the feedback!
yep, the abstract pack is quite easy, but there is an update bringing community packs, so now you can create your own packs, play and share them https://wertins.itch.io/sketchdown/devlog/1634400/community-packs-are-here
also there is a new pack that I consider quite challenging. It took me a while to get 10/10 :D