Starting from Level 5 of Turtilliada, you can get Emerald Turtles if you complete levels at the first attempt. If you are out of moves, you may purchase additional ones: This won’t influence your reward, and you’ll still get the prize if you win.
If you lose, don’t despair: You can have another try on the next level.
Emerald Turtles can be exchanged for exclusive decorations at the shop.
Note that if you completed the main levels of Turtilliada and want to get more Emerald Turtles, you can always do so by playing with the octopus. The octopus will also give you a turtle for each level you complete at first attempt!