Good concept, it's like a cross between Zoombinis and Papers, Please. Loved the music. The art for the aliens and the items in the case was great.
I think the game needs some feedback when you click the red and green buttons. I was confused about whether I should drag things on or click them, or if they even did different things (because you get the same outcome either way... the traveller just keeps on walking).
Would also be good if you randomized the names of the items on every play through for replayability. (Although to be honest I found it very difficult already so I was relieved that you didn't!)