For reasons unknown, a gate between two dimensions cracked open by means of a portal. Dare you enter through it?

Once through the portal, you find yourself in familiar surroundings. However, you soon realize that this is not the same world you were standing in moments ago. Everything appears to be a mirrored version of the sixth floor corridor with some peculiar differences. Overgrown tendrils and fleshy membrane cover the walls and ground beneath you, and spores eerily float in the air. Goosebumps appear on your arms and your vision isn't very clear for it is colder, darker, and foggier here. The rest of the castle and grounds, for those who get that far, are no different. Not a single ray of sun shines in this topsy-turvy world where magic, you soon will discover, isn't as strong as it is in the brighter dimension you came from.

If your gut is telling you that this place is too creepy and that you should turn back now, then listen to it. Otherwise, explore this alternate Hogwarts at your own risk. Who knows what lurks within these walls.