Mendel Palace is an odd little game. You have to manipulate the tiles on the floor around in such a way that you slide the enemies into the walls.

But, what if you've played the original set of levels to death and want a different challenge?

You could hold Start and Select and then press Reset on your console. You might then notice that the title screen is a little bit different.

You now have some more levels to challenge your tile-sliding fingers, known as the Extra Stages by... well, just me, really.

But no matter what you call them, they start out slightly tougher than the main game does, so good luck!