I like the game and had no problems finishing any levels. If you require more water in level 10, build a second well. At the bottom center of the level there is a construction site of a well, directly behind the ghost light. To get enough seeds in level 11 build the meadow, harvest pasture and exchange it at the trader. Repeat as often as you need seeds. To build the meadow pickup the two seeds lying on the road.
I bought the game and i like it so far. I was able to find the speed up button from beginning on, not like all the other reviewers here. The game pace is ok with higher tempo but in later levels you actually need it slower because of all the stuff going on. Higher level gets more and more difficult. People which played the demo only cant really jugde the game i think. I like the art style of the game. You should definitely give it a try.