Yello.
Half a year ago we implemented difficulty levels. As they were added right after the release it meant we had had about one month to balance it. Not enough.
Fortunately, our dev, Kondzio, dedicated additional hundreds of hours of his life to adjust the numbers. Meanwhile, his best friend, Alvaro, polished the enviro. Like totally. Of course, we also eliminated a lot of minor bugs that aren't even worth mention.
We're going to upload the patch next week. So, if you're among the people who gave up on Ultimate Summer because it being too hard or too easy, you may give it another try. It's just the same, but more fun.