This is very very cool! Great job and amazing graphic design! Reminded me of Cosmic Wheel and Papers Please - also nice adaption of the theme - there is nothing that can go wrong, right?
Some nitpicks:
- Text is very small for if you play on smaller screens
- no soundtrack?
- grid snapping felt "bad" because it took control away from me
- tutorial text was hard to read (the white text on bright backgrounds)