Damn, couldn't find one of those seeds. Will replay in a while.
(Had to swap z with x because jumping with x is weird.)
Great game!
UPD: great to get a reaction from developers :) I just replayed the game - I've got 19 seeds again, I'll keep looking. Also, need to find that mysterious gold skin. But at least there's some progress, because you know what - melon! This is fun)