Do you think each level has a max size, like with the moon, i can't seem to get anything higher than 880m...

I think each level has a cap, though it would be cool if they had an ultimate cap, like the moon level was 1000 meters and once you reached that size, you'd know you got everything....and so on and so forth.

If you roll up enough little islands before they disappear, you can break 880m on MtM.

MaS1 probably has a very definite wall; I haven't been able to get above 19cm6mm, so the wall is probably a mm or two past that. I'm not sure about the other levels.

It seems like for some levels it is twice the target size. For example MAS 1 and 2. Of course that doesn't work for other levels, all the regular eternal levels (MAS 4,8 and MTM). That's just what it seems like to me.

:marny ,eternal number 2 does seem to have a pretty small max size. it is also irritating when you get so big in the level that you cannot see anything and are just clunking around.