Prince of Persia II Prince of Persia 2 Hold down 1,2,3 keys when you start up PoP2 and you will have the powers of Jeffar. This is the same effect that you get when you drink an inverse potion. Press the same key to return the screen to normal.
Room numbers seem to repeat on different levels.
The background scene is blacked out and only the animated objects are visible. Press the same key to return the screen to normal. Pressing it will subract one health point. Not particularly useful except for those of you with a death-wish. This mode allows you to single step the animation.