Hi, I just played a few rounds of your game and here's what I thought.
The game is quite addictive. At first, I wasn't really sure what I was supposed to do; perhaps a mini-tutorial would help explain things a bit, at least that the goal is to build a castle.
You could also add icons to the top bar where the values of what you're collecting appear, and even to the small worker selection screens, perhaps with red and green arrows to indicate what you gain and lose.
You could even add toast notifications to alert you when an objective has been completed, for example, the one for getting the boat to go to another area.
Overall, it's really cool. If you add satisfying sounds or if you're willing to include small 2D/3D models of the workers with their animations, it could be a very eye-catching game. Congratulations!
