Really addicting game. I like the mechanics and how the game works. I think the controls can be improved a bit. Especially the camera movement. I also would limit the camera movement so that you are not able to scroll outside the main area. I also would love to pan the camera with WASD keys.
I also think that the design of the UI Elements could be improved to make it look more "modern". Besides that points it is a great game!
The graphics are good enough for that kind of game (in my opinion).

Yeah. The options and controls menu looks a bit too basic. And the font of the buttons is sometimes a bit outside of the dark red area. I would make the font a bit smaller, so that it is always in the dark red area. But that might be just my personal taste. I also think that using another font can improve the design.

I like how the game works. Levels are also designed well. The biggest problem that i see here is that new players don't understand exactly how the game works. I would suggest to make a small in-game tutorial where the player easily understand how the game works.

The game is easy to understand. Controls are also good. Graphics are also good enough for this kind of game. In my opinion the game is a bit too "basic" There is not much that you have to do in this game. It's just clicking on some building and moving the camera which gets a bit boring after playing for a while (in my opinion). I think the game would be more interesting if there would be some enemies or some KI which is trying to do the same as the player.

Thanks a lot for your feedback. Really appreciate it. I agree with the tutorial txt errors and with select level menu.
In the first level I agree with you: The camera does not need to move or zoom here. But in later levels, i think it will be much easier to move the camera. Especially on phones with a small screen.
I can implement the right-click to go back functionality in the next release.