The star scores used to be 300 - 5,000 - 13,000 before they were adjusted.
An earlier version had 12 fireflies, so there was no need to go to the last board, if you collected all fireflies before. This now has been changed, and you need the last board to collect the remaining fireflies.
Rocket blast booster ( ) is unlocked.
It was the first level to have one gem in a color. The next level is Level 256.