Wooo! The concept here was really great, although I wasn't quite sure what I was getting into with the detailed instructions. It took me a few reloads to figure everything out - a step-by-step tutorial in game would definitely be helpful for players if you decide to iterate on this! I also noticed that during the Build phase there wasn't a way to turn off the tiles. If I didn't want to build, I would have to pan off the board so it wouldn't build a tile when clicking the Done button.
Could've used some music or sounds. Otherwise I really really enjoyed this! Great work!