The Maelstrom

You stand on what feels like solid ground, but when you look down there is nothing to stand on - instead, there is a whirlpool.

Fighting off a crippling attack of vertigo, you force yourself to look up. The maelstrom continues to swirl dizzily around you, but - hey - at least you aren't looking down, right? Three doors appear out of the swirling mess and rest, with reassuring stability, a couple steps away.

Are they doors to other worlds? Well, there's only one way to find out.