Fine idea, but the execution is lacking because of bugs :(
Bugs:
I can build infinite many building in same place, so I never went out of money.
You can build tings so they cover the UI.
Design problem:
I could not read the number for what it cost to reset the timer.
Since the buildings don't do anything then being next to each other, you really don't need any plan. I had no use for other buildings then the red, because the gave more money then I spend.