This game should be right up my alley but I can't seem to do anything but placing the first type of building. Pressing SHIFT does nothing in-game and nothing seems to happen.
I know, it's because my team members weren't able to get the SHIFT input working in-game. I had to work on adding a pause menu at the very last minute before I submitted it, where you can press ENTER for resuming play and SHIFT for quitting to the main menu.