It is very casual last survive and user almost no need to learn how to play, but difficult to get decent distance in the game if without trick. The difficulty will higher when you go far. Tunnel will turn to narrow when move far, player will difficult to control well in up and down wave, ball will explode when impact to border.
Easy addictive.
FEATURE
Player must keep the ball survive and do not impact border, otherwise ball will crash and game over. Distance as far as possible is better.