Thank you for playing! The screenshot looks nice :P.
Yes, it was supposed to be more challenging but sadly we don't have enough time to conduct playtests. As the artist, I named the enemy model "WEAK chess" but obviously, we don't have time to implement any STRONG chess hahaha. And the resources gained increased exponentially but with the same amount of cost, it resulted in too much lol.
Yes, for the UX part, we should probably stop the camera movement when placing buildings. Floating UI OnHover would also help too. We will def take your opinion into account. Thank you for the review and the photo :)))