Thanks for your feedback. As for the early levels, it would be hard to make them easier without defeating their purpose. They teach the player important lessons that will be required to solve the much harder puzzles later. All the puzzles before the first item you obtain are still very doable by someone who isn't very good at this type of game. Though the later ones are definitely aimed at more "hardcore" sokoban players. As for the music i'm not sure what you mean, there is music, if you think it's very simple and not attention grabbing, that was the point as we wanted the focus to lie on the puzzles more. Though there is a second track in the later part of the game that is much better and i think you'd like.