Really nice take on the theme, the game was fun and entertaining! It gives you different strategies on how to approach it and puts your memory to a good test.
Some small critiques with the ui:
- the ui for opening the the trucks and various doors is a little too small and will sometimes disappears when moving the postman just a little. It's a bit annoying when you're in a hurry
- when moving packages, they automatically re-arranges themselves without any animations so it gets a little hard to track them with your eyes
Apart from that, nice game!