it just bounce vertically like just collida to a plane ,how can i stimulate the real situation that the marble should finaly bounce not only vertical but also horizontal left or right
What collision shapes are on the marble and the pipes?
Regardless of the shapes - are you maybe dropping the marbles straight at the pipe? If so, it may bounce exactly right up if you don’t provide any force to either side. Try offsetting the marbles position so that it hits the corner, it should then bounce to the side too.
