Why should I tell you little punks...
I figure it all out on my own up to about level 10...
The Tile thing is a pain in the ass, I don't rember how I did it...just clicked around randomly...*
However, when you get to the annoying key pad with symbols, remember, it is what DOES NOT belong...example...15 does not belong in a row that has multiplies of 8, does it?
If, in some amazing way, you get to the GREEN WALL, PM me for instructions. there is only one logical way to complete it
*there are walkthrus all over the internet...Just type in The Mystery of Time and Space walkthrough into Google. Be sure to include "Walkthrough".