This is one of the coolest adventure intros I've ever heard of. I have not used it, nor was I so privileged to have been present when it was used.
"You are fixed firmly in the goings-on of your normal, routine life (however routine, or not-so-routine it may be), when suddenly you are unfixed. Literally! Yes, you find yourself floating, for lack of better descriptive terms, your mind a blurry mish-mash of random thoughts and memories, nauseating colors, and dizzying mists. Just as you expect to blank out you begin to recover, the blurriness fading, colors melting, your mind returning. Your surroundings, however, have changed. You look about, finding yourself in an unusually dark room seated at a table along with X other people. All of them seem as bewildered and confused as yourself. Before you can speak you are spoken to. A resonating voice rings forth:
'You have been summoned.' "
At this point the Dungeon master should describe himself - yes his/her actual self - to the party as fading into view before the table where it is revealed that the DM is summoning the party members to accomplish some task. Go to Comment
Culture: Drumming circles daily around an arena for their bravest brutes to slaughter their accepted foe, the zombie. Feasts of overcooked zombie flesh (to kill all of the zombie virus present). Wooden fortress that make this tribe in the far future look several millennium behind in technology. Instead of becoming a troublesome and unnatural foe that they seek to cure, this tribe has accepted that Zombies will continue to roam their land and, if the undead were to perish (be cured), this tribe would suffer as well.