I think the game is not intuitive. For example you could add (mouse) button to accept/dismiss a passanger(while still keeping keyboard as alternative). That way player can immediately understand how to accept/dismiss passangers and dive into the game even without tutorial. I also think there is too much information to remember while checking passport - I would either limit the amount of information or show a valid passport model/pattern on side of the screen. Besides that I think art is great and It's a cool concept - it just needed a little bit more work to make it less discouraging for a new player.