In this game, you and your opponent will launch four balls in turns. The final point will be calculated as the sum of all your balls. Therefore, the most interesting thing is that one of your balls  has already stayed in the 10 point grid, but your friend just kicked your balls into the minus 6 point grid!

There are many kinds of the grids, which have different functions:

Numbers: Gain the corresponding point.

Fire: Catch and spread fire!

Glue: Stick at the floor when the ball is ceased.

"X": The same function as wall.

Ice: Decrease the friction force of the ball.

Sand: Increase the friction force of the ball.

Empty Grid: Gain 1 Point.