Balls fall through rows of pegs and bounce right with probability p at each peg.
Tap left or right to set p. The same ?seed= always gives the same run.
LITGalton’s board (1889) and the de Moivre–Laplace theorem. Every ball must be accounted for (falling plus landed equals dropped), or the page throws.
AMBERBalls do not collide in this version.