Nils' Bohrmaschine

This game has you face the most pernicious of puzzles: checking out at the grocery store.

You have a wide variety of items you have to balance, include the screwdriver of your friend Nils (this is a joke that I wonder how it would be translated; screwdriver is 'bohrmaschine', this this is Nils' Bohrmaschine, a pun on the name of famous physicist Nils Bohr).

You navigate the various buttons and weighings and so on. Then the game gets weird. (complete spoilers) (Spoiler - click to show)Trying to leave, I found myself entering again, starting the game over again. I feel like that was due to the screwdriver which acts as Chekhov's gun and Schroedinger's Cat at the same time. So I tried again, this time changing things up, since in my first playthrough I scanned a deposit slip and ended up with a negative balance, but this time I didn't. Also, this time I saw a portal and entered it, which gave me a third playthrough. This time I didn't scan the deposit slip and didn't leave anything on the 'waage' (scale?). I was able to leave normally, although I had to enter my pin twice.