Prior to ridicule in a bowling alley, it is better to train on a game bowling. Some tests are necessary before the movement control and launch the ball correctly. Ditches to strikes, there is sometimes a step!
For the perfect start, point your mouse towards the pins while aligning the trajectory with the marks on the floor. Hold down the left mouse button until the marks on the floor and toward the pins as if you run the throwing motion and release the button.
(Automatic translation)
A context menu should be shown when right-clicking or, on touch devices, long-pressing in the game. This menu especially allows to play in full screen and control the volume.