The principle of this solitaire game is simple: eliminate the plateau maximum possible balls (the ultimate goal is that only one remains). A move is to pass a ball over another in a hole that it goes away. A game that makes his brain work.
Select a ball with the mouse and hold the left mouse button to move it.
(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.