I was immediately taken by the visuals, music and sound which I felt suited the game very well. The "heya" from the humans was a simple yet charming touch to the presentation. I also liked how the UI works and the controls which I felt were unique in a good way. If you're looking for inputs I think using one of the arrow keys(maybe 'down') to place cards would've improved the experience a lot since it means I wouldn't have to keep moving my right hand to place cards.
I didn't quite get how the 1st theme worked though.. perhaps you could let me know.
Anyways, I think it's quite an interesting take on town-builders and would love to see what it could turn into.