This was quite relaxing and I enjoyed playing it. Nice use of the theme and quite original idea, which I also surprisingly like. I'm not really sure if you need some card to switch the functions, why not to use just some toggle buttons. But if you wanted to use it for some tension and to increase the difficulty, then in my opinion it was not quite enough.. as I already said it was quite relaxing for me.. which is also totally fine :D
However, this entry very nice! Very well done!!