You are transported to an empty waiting room. A sign informs you that, once you pass through the door you will enter a new world (but it doesn't say which new world).
Before you can open the door, you get to make a choice:
1. Remain as you are
2. Be transformed into a Vampire [type of your choosing] but without the standard, traditional weaknesses of sunlight or daytime.
3. Be transformed into a Werewolf [type of your choosing]
4. Be transformed into an Android or Cyborg [type of your choosing]
5. Be transformed into whatever sentient alien life form lives on this world
6. Be transformed into a magic user [you choose what type of magic and/or what type of magic user]
7. Be transformed into shapeshifting Dragon [your choice as to what type of dragon]
You have no advanced knowledge of what lies ahead, except that it has an environment similar enough to Earth's so that you don't die as soon as you step out. Also, it does have sentient life, but no idea what kind or what kind of civilization they have if any.
So, what do you choose? if you decide to stay in the waiting area for more than a day, you will find yourself floating in space as room needs to be made for the next person.