Don’t worry, we’ll keep you busy! If you complete all the regular Turtilliada levels, Willy the Octopus (who you might have noticed on the map) will suggest that you complete 15 stages of his own game. You’ll get chests filled with useful items for completing some of the stages. When all 15 stages of Willy’s game are complete, new stages will be unlocked for you!
You can get Emerald Turtles for completing additional levels in just the same way as with the main 150 levels!