Use the arrow keys to move the cat. Try to find the thing. But wait! Its too dark to see the cat or the thing. That isn't a problem. Put on headphones and you'll be able to hear which direction the sound of the thing is coming from. Press space when you think you've found the thing.
This project uses what I think is the most underused block - the sound effects block! Using the pan left/right block it is possible to make audio sound like it is coming from a certain direction!