I couldn't figure out what to do, I collected a few of those white box things but then wandered around for a while and had to give up because the brick texture was doing funny things to my eyes. I liked the atmosphere though.
Thanks for the feedback, I'm glad you liked the atmosphere! Sorry about your eyes. I admit the game is not too clear on what needs to be done, but to beat it: collect four of those white box things, and then find the exit.