Lots of room for improvement
Stylistic wise, I felt like I was playing a flash game that was made from the 90s. And not the good type either. Lots more work could be done for practically everything, character design, background. There are some flash artists who pull it off doing simple artwork though, so maybe you can take "This Is The Only Level" as reference.
The music appeals to Electronic fan like me, but after the loop's done, I must admit it really gets annoying. Add a bit of variety with songs, cause you've got literally the whole audio portal at your disposal. Just remember to reference them when you borrow their songs for your flash. Also if your only using one loop, try using audio editing software like Audacity (free) to cut off a bit of the ending part so that the loop sounds natural when transitioning between ending to beginning.
I don't see a very interesting story behind this 4d thing, so maybe think more in game development plan. And could you make the figure move faster?At least give an option to sprint, cause I really don't have all day to wait for a figure to take all that time to walk from one end to the other.
Thanks for your constructive criticism. C: