The bang ball always wants to move right and fall down. Your mission is to keep the bang ball floating by hitting the bars. Bars gain speed, reduces length after certain intervals of score. So be alert.
Up arrow to start game. Up arrow for a jump in the air.
Right arrow to move right. Left arrow to move left.
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.