I like the game, but now i feel no sense of passion to play. It's very addictive until I never realise I have run out of money to buy out the booster in order to pass hard / super hard level. I guess, this is too much, there is no way for you to win, as the movement already shortened. And you have no other option either to keep playing until you loss the live, or spend the money to have extra booster or extra movement.