The game is based on a popular Boules game: http://en.wikipedia.org/wiki/Boules. The aim of the game is to place user's boules as near to the target boule (jack) as possible.
Every player has two boules in one colour. They are placed along the shorter edge of the screen. The jack (target boule) is placed on the opposite side of the screen.
After moving the boule and before tapping player can zoom and rotate the board
Distance between the boules and the jack is calculated. The player, whose boules are closer to the jack wins.