Some people were expressing some concern with Assassins being run in such a high population environment, and gave some great suggestions on how to do that. I've taken those suggestions and put something together that will hopefully keep the core gameplay but give people more options.
Basically, their are now two tiers of gameplay, with the primary tier being core Assassins and the secondary tier being a free-for-all. Both tiers attribute to a metascore for ranking and prizes.
Players will be given a card (and a way to wear it) with a unique but highly visible symbol on it. This card also has a smaller piece (think a keychain VIP type card) on it that breaks off; that piece has a mini version of your symbol and that of your target. A sample is below.
card tells you who your first target is, and should you find them, you take their current breakaway card, which has their
target. In the event that they have already found that target, you'll take the breakaway card with their current target. And so on.
For each "kill" you make you will have a breakaway card for it, so in the event you are eliminated, you will have a record of your kills. There will also be a way to record your kills online.
The Booty Clause (Optional Rule from The Reflection)
Basically everyone involved brings a piece of booty. An action figure, stuffed animal, or some little cool thing to act as a trophy; i.e. something you are willing to give away.
When you kill someone, they give you their piece of booty to keep as a trophy. Like a little something to remind them, 'Hey, I remember killing that one guy at PAX!'. If you collect some booty then get wacked, you just give up the booty you brought; the ones you have collected are yours for keeps.
The secondary tier is a free-for-all system, where players will perform "stealth kills" on players by locating a numeric code on another players card and texting it to an email address or recording it online. I'm debating whether to make each player "stealth killable" once, or once per day.