Get to play as Simon Belmont
After finishing the game, restart the game at any point and type in the Konami Code (up, up, down, down, left, right, left, right, b, a) during the Konami logo screen. If you typed it in right, the menu screen will turn back to the original blue it was before you finished the game.
Run Boss Rush mode and you'll be able to play it as the original Simon Belmont from the first Castlevania with the original graphics and original Vampire Killer theme playing in the background. Add