Oyyou.MonoGameTutorials/MonoGame_Tutorials/Tutorial007/Sprites/Bomb.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;

namespace Tutorial007.Sprites
{
  public class Bomb : Sprite
  {
    public Bomb(Texture2D texture) 
      : base(texture)
    {
      Position = new Vector2(Game1.Random.Next(0, Game1.ScreenWidth - _texture.Width), -_texture.Height);
      Speed = Game1.Random.Next(3, 10);
    }

    public override void Update(GameTime gameTime, List<Sprite> sprites)
    {
      Position.Y += Speed;

      // If we hit the bottom of the window
      if (Rectangle.Bottom >= Game1.ScreenHeight)
        IsRemoved = true;
    }
  }
}