Thanks for trying out my "game". Yes, you are right, the connection to the theme is very unclear. That's because that connection was supposed to be in the gameplay (which I didn't get to implement). I ran out of time, and the best thing I could do was to polish the graphics to make it at least look like a game. And you are right, the collision detection and the controls suck :) But that's another thing I had no time to fix.
You weren't actually supposed to control your character directly. Instead, it was supposed to be more like a mixture between a god game and text-adventure, where you choose actions for your autonomous character. A more detailed explanation is here.
P.S.: Did you experience some game crashes?