How to deep fry you brain? Play this game.
I remembered some old traffic controller games with your entry. With time, it's a mess to make everything work. Using the numpad sounds weird at first (at least for me), but makes sense, and this entry has simple controlls. If I could add something, I would put some extra stages, with more turns and more chaos.
Congratulations!
(By the way, I think there is a type in the game description)