It's fun but level 1 was pretty complicated. At first I didn't realize how to do it because I didn't know you could get more pieces. Then I didn't understand why I was losing because I didn't realize you need to destroy 2 barrels. Then I didn't understand how to get the second barrel because I didn't see the 2 less obvious pieces. Eventually got it on like the 9th try.
I think the game would benefit from simpler starting levels to learn all the concepts. Also an option to not rotate pieces that are already placed, or only rotate them if you click to select them.