Monte Carlo Aggregation. This aggregation is based on random number generators. New particles appear at random places they cannot move. Particle aggregate only if it touches another paticle otherwise it vanishes. To see a better fractal increase number of iterations. Instructions: To start calculations press start button. You can choose between three kinds of particles: spheres (points), needle-like, and cross-like particles. p+n means that there are two kinds of particles: points and needles, they build a fractal in such a way that point can stick only to a neelde and needle can stick only to a point. p+c, c+n and p+n+c mean that there are points and crosses, crosses and needles and points, crosses and needles respectively, in all cases a prticle can stick only to particle of different kind. You can use different random numbers generators (RNG). Generic is a JavaTM generic random numbers generator. Generator 1 is a linear generator. Normal is based on normal distribution (particles most likely will appear in the centre). BBS is Blum, Blum, Shub generator of square remainders. RSA is based on a power generator.