There is a level system within the game. You can play the game at no cost with the initially active character. You
can select any character from the character selection screen.
The levels are saved within the game. You can play levels that are open at any time.
You can skip the level by clicking the "Skip level" button and earn +25 diamonds.
With Diamonds you can turn your character from the game character selection screen.
When you finish the game, the "Random level" button opens in the main menu, you can play random episodes by clicking this button.