I call this food chain because its a viscious circle. 
     
     Here's how it works: 
         At the beginning of the game each player draws a card and then fastens it
via safety pin, clip, etc. to his hat or shirt (must remain visible). You  must run
from players who's cards are higher while killing players cards who are lower than
yours.  The catch is that Aces (treated primaraly as a one) can only kill face cards
(i.e. Jacks or better). The last guy alive wins. 
     
     The gotcha is that number cards are dead without the help of the aces to kill
the face cards, in turn the aces are dead without the help of face cards killing
the numbered cards. (It's kinda a love/hate thing going here so kill them but only
when the time is right) but makes for great play because you have to get close enough
to read the card while giving up your identity, good eyesight is required.