Cool, very hard but cool. Also I think that the teleporting thingy from side to side when you hit the edge of the walls is too far in. Maybe make it closer to the edge?
lol, as i am writing this message, i noticed that i totally misunderstood what you were saying... so i actually pulled the teleport distance MORE away from the walls :P disregard until next update heheheh... on a more positive note, i did some visual updates, apparently the web build did not include all the post-process effects, they should be included now :)