Control bat with mouse (or touch screen on mobile) - Swipe the bat up while hitting the ball to apply top spin. The ball will spin forwards and accelerate downwards. - Swipe the bat down while hitting the ball to apply back spin. The ball will spin backwards and accelerate upwards. - Likewise applying side-spin causes the ball to swerve to either side. - See https://en.wikipedia.org/wiki/Magnus_effect
Spinball is a new 3D HTML5 pong game for PC and mobile devices, similar to an old Flash game (Curveball) from the early 2000s. Attempt to beat the computer over levels of increasing difficulty and see how your high score compares to other players.