I thought this game was extremely well made. I don't know how I would go about figuring out how to create a means of placing things anywhere on the grid, as well as being able to open UI menus for each of the characters, all on top of a financial system of trade and an upgrading system. I love this, although, if there was any criticism to make, it would probably be to maybe make it easier to understand how to play the game. I fail to do that properly in my own games, so it's not really much of a problem to me. All things said, I thought this was great.
Edit: Love the music too :3