A game, called an "end", consists of delivering 8 rocks by both parties.
The two players alternately deliver their rocks during an end.
The winner of an end will be the first to throw in the next end. If the end is tied, then the winner of the last end, which was not tied, starts the next end.
To aim: move the broom on the teeline to aim. You can position the broom in the 3D view, or in the 2D box in the top left corner as well.
Press and hold the left mouse button to gain power. The power indicator will help you to find the right power for your throw.
Sweep when necessary by wiggling the mouse.
You can change the direction of the spin by clicking on the SPIN button in the bottom right corner.