Thank you for playing the game! That is a very useful advice. Now it is more difficult for players get to the 2nd, 3rd worlds so most times players are playing the 1st one and get tired of it quickly. This game is made two years ago so I do not have plan to continue developing it since I can do many stuffs better now. Thank you for the feedback! It is something I can think of to improve my design in my current/future games. (=v=)