Very good implementation of the theme. I just would prefer WASD instead of arrows. Idea is inspirational. Style is minimal which fits to concept very well. I'm not agree with other comments indeed, finding the purpose of the game by your feeling but not instructions is correct approach. For me ball hitting the ceeling and trough that finding your pathway is actually makes the game very realistic despite that minimalist gameplay and visuals. One of the nice game which I play this jam.