View difference between Paste ID: wijHas96 and RZqNTvdD

 using System;
 using System.Collections.Generic;
 using System.Threading;
 
 namespace FallingRocks
 {
     class Game
     {
         static char[] r = new char[] { '^', '@', '*', '&', '+', '%', '$', '#', '!', '.', ';' };
         static Random rand = new Random();
         static List<Rock> rocks;
         static int playGroundWidth = 30;
         static long scores;
         public class Dwarf // singletone
         {
             private static Dwarf instance = null;
             private string body;
             private int x; // position of '('
             private Dwarf()
             {
                 body = "(0)";
                 x = playGroundWidth / 2 - 1;
                 Print();
             }
             public static Dwarf GetInstance()
             {
                 if (instance == null)
                 {
                     instance = new Dwarf();
                 }
                 return instance;
             }
             public void MoveLeft()
             {
                 if (x > 0)
                 {
                     x--;
                 }
             }
             public void MoveRight()
             {
                 if (x < playGroundWidth - 2)
                 {
                     x++;
                 }
             }
             public void Print(bool hit = false)
             {
                 Console.SetCursorPosition(x, Console.WindowHeight - 1);
                 Console.ForegroundColor = hit ? ConsoleColor.Red : ConsoleColor.White;
                 Console.Write(hit ? "XXX" : body);
             }
             public bool Overlap(Rock r)
             {
                 if (Console.WindowHeight - 1 == r.y)
                 {
                     if (x == r.x || x + 1 == r.x || x + 2 == r.x)
                     {
                         return true;
                     }
                 }
                 return false;
             }
         }
         public class Rock
         {
             private char body;
             public int x, y;
             public ConsoleColor colour;
             private ConsoleColor GetRandomConsoleColor()
             {
                 int r = rand.Next(16);
                 switch (r)
                 {
                     case 0: return ConsoleColor.White;
                     case 1: return ConsoleColor.Blue;
                     case 2: return ConsoleColor.Cyan;
                     case 3: return ConsoleColor.DarkBlue;
                     case 4: return ConsoleColor.DarkCyan;
                     case 5: return ConsoleColor.DarkGray;
                     case 6: return ConsoleColor.White;
                     case 7: return ConsoleColor.DarkGreen;
                     case 8: return ConsoleColor.DarkMagenta;
                     case 9: return ConsoleColor.DarkRed;
                     case 10: return ConsoleColor.DarkYellow;
                     case 11: return ConsoleColor.Gray;
                     case 12: return ConsoleColor.Green;
                     case 13: return ConsoleColor.Magenta;
                     case 14: return ConsoleColor.Red;
                     case 15: return ConsoleColor.Yellow;
                     default: return ConsoleColor.Black;
                 }
             }
             public Rock()
             {
                 body = r[rand.Next(r.Length)];
                 x = rand.Next(playGroundWidth);
                 y = 0;
                 colour = GetRandomConsoleColor();
             }
             public bool MoveDown()
             {
                 if (y < Console.WindowHeight - 1)
                 {
                     y++;
                     return true;
                 }
                 return false;
             }
             public void Print()
             {
                 Console.SetCursorPosition(x, y);
                 Console.ForegroundColor = colour;
                 Console.Write(body);
             }
         }
         static void Initialisation()
         {
             Console.BackgroundColor = ConsoleColor.Black;
             Console.CursorVisible = false;
             Console.Title = "Falling Rocks";
             Console.BufferHeight = Console.WindowHeight;
             Console.BufferWidth = Console.WindowWidth = 50;
             scores = 0;
             rocks = new List<Rock>();
         }
         static void Main()
         {
             Initialisation();
             int livesCount = 3;
             Dwarf dwarf = Dwarf.GetInstance();
             List<Rock> removeObsoletes;
             bool hit = false;
             ConsoleKeyInfo pressedKey;
             while (true)
             {
-                for (int i = 0, count = rand.Next(playGroundWidth / (scores > 200 ? 8 : 10)); i < count; i++)
+
                 for (int i = 0, count = rand.Next(playGroundWidth / (scores > 200 ? 7 : 10)); i < count; i++)
                 {
                     rocks.Add(new Rock());
                 }
                 // moving our dwarf
                 while (Console.KeyAvailable)
                 {
                     pressedKey = Console.ReadKey(true);
                     if (pressedKey.Key == ConsoleKey.LeftArrow || pressedKey.Key == ConsoleKey.A) // <--
                     {
                         dwarf.MoveLeft();
                     }
                     if (pressedKey.Key == ConsoleKey.RightArrow || pressedKey.Key == ConsoleKey.D) // -->
                     {
                         dwarf.MoveRight();
                     }
                     if (pressedKey.Key == ConsoleKey.Escape) // Esc
                     {
                         Environment.Exit(0); // leave game
                     }
                 }
                 removeObsoletes = new List<Rock>(); // rocks, which are to leave the screen
                 hit = false;
                 foreach (Rock rock in rocks)
                 {
                     if (!rock.MoveDown())
                     {
                         removeObsoletes.Add(rock);
                     }
                     if (dwarf.Overlap(rock)) // if hit
                     {
                         livesCount--;
                         hit = true;
                         Console.Beep();
                         if (livesCount == 0) // game over
                         {
                             Console.ForegroundColor = ConsoleColor.Red;
                             Console.Out.WriteLine("GAME OVER !!!");
                             Console.ForegroundColor = ConsoleColor.White;
                             Environment.Exit(0);
                         }
                     }
                 }
                 Console.Clear();
                 foreach (Rock old in removeObsoletes) // removing rocks, which are to leave the screen
                 {
                     rocks.Remove(old);
                     scores++;
                 }
                 if (hit)
                 {
                     rocks.Clear();
                     scores -= 10;
                 }
                 // printing
                 foreach (Rock rock in rocks)
                 {
                     rock.Print();
                 }
                 dwarf.Print(hit);
                 Console.ForegroundColor = ConsoleColor.White;
                 Console.SetCursorPosition(playGroundWidth + 5, 5);
                 Console.Out.WriteLine("Lives: {0}", livesCount);
                 Console.SetCursorPosition(playGroundWidth + 5, 7);
                 Console.Out.WriteLine("Scores: {0}", scores);
                 Thread.Sleep(150);
             }
         }
     }
 }