Vamp Tag Rules
For those who are curious we'll be using what seems to be the simplest set of rules.

Touching the anything except the designated areas, for whatever reason, is death, excepting the "bat" power.
Someone hides the items in legitimate places before games; this person should not retrieve or lead others to retrieve such items.
The "vampire" is determined randomly by drawing cards (usually we use the ace of spades). Everyone else is mortal. Everyone starts in the center, and there are 10 seconds of safety for everyone to scatter, during which vampires cannot embrace or use powers, and the mortals cannot pick up items.
Vampires convert a mortal by touching the neck / shoulder area. Mortals obviously should not use this gesture.
Vampires have three powers, usuable once per current vampiric lifetime:
1. Bat - allows you to move in a straight line across out of bounds areas, to the nearest in bounds location along that line.
2. Grab - allows a vampire to convert a mortal by touching them anywhere.
3. Fear - cause one mortal to flee in terror for 10 seconds.
Mortals have two items. Vampires cannot (willingly) touch items, either while on the ground or in someone's hand. Items must be thrown after use:
1. Stakes - usually two - staking in the torso, front or back, causes a vampire to turn mortal. Staking a mortal is lethal to the target.
2. The cross - constantly emits a vampire repellant such than none may approach it within three steps, in a circle when on the ground, or in the direction pointed while held by a mortal. Has two uses - Fear, which makes all vampires flee for 10 seconds, and Burn which allows you to "stake" a vampire anywhere on its body.
Dead characters should stay off the in-bounds areas and cannot affect the game any more except by talking.
The game ends when either all are vampires, or all are mortals. This is checked with "vamp check" and "mortal check". For example, if someone thinks that only mortals remain, he calls out "mortal check". Player one, if mortal, calls out "one". And so forth. If the count makes it to the end, the game is over. Ghosts - dead characters - count off their number for either check. Numbers are handed out at the beginning of the game (usually as people arrive).

Variants which we may use (but probably won't):
"Diablerie" - vampires who try to embrace other vampires stun both players for 5 seconds. The would-be-embraced character says "stun".
"Respawn" - dead characters come back as the opposite of what they were when they died after 100 seconds.