PseudoRandom

            static int max = 3;
            static double[] chances = null;

            internal static int Choose(this List<MenuSceneInfo> list, int hash)
            {
                if (chances == null)
                {
                    chances = new double[list.Count];
                    for (int i = 0; i < chances.Length; i++)
                    {
                        chances[i] = 100d / chances.Length;
                    }
                }

                double random = Math.Pow(hash, 0.5) % 100d;
                double sum = 0;

                for (int i = 0; i < chances.Length; i++)
                {
                    sum += chances[i];
                    if (random < sum)
                    {
                        double penalty = Math.Min(chances[i], (100d / max) / chances.Length);
                        double bonus = penalty / (chances.Length - 1);

                        for (int j = 0; j < chances.Length; j++)
                        {
                            chances[j] += bonus;
                        }

                        chances[i] = chances[i] - bonus - penalty;
                        return i;
                    }
                }

                return 0;
            }