Hrm... If you don't need the masks of the tiles to walk on, then it only takes 3 and 4, but if you need the masks, then yes, it takes 3, 4, and 5. It could be limiting, but no one seems to be making background eyecandy, so it shouldn't be a problem.

I'll make the normal tubes as well. I should have them done by tomarrow night.

`N0