Fun game, but I'm confused about the scoring for custom tiles. For example, I made my 6 tile solution from lvl18 into a custom tile. For Level 21, I just placed three of triple tiles in a row to make 27. I got a score of 9. How is that calculated? Shouldn't each custom tile count as 6 since that's the number of tiles used in them?
EDIT: OK, I think I figured out how the actual scoring works, though I'm not sure why it's that way. You only count the inner workings of the custom tile once no matter how many times it's used. Then you count one for each custom tile placed (including the first). In my example above, the custom tile contained 6 tiles and I placed 3 of them, thus giving a score of 9. So if you want to optimize score, don't use a custom tile unless you place multiple copies of it. But use custom tiles whenever you can if you have repeating parts.