It seems to be the new thing to do so I figured I'd try my hand at it. I'm planning on starting a new 20th level hunter killer arena.
Each contestant is a master of his or her craft from Golarion's history who, at one point or another, decided that they were powerful enough to take the Test of the Starstone. All have been transported across time and space to a multidimensional arena of epic proportions. Your instructions are simple, kill all other participants. If you fall in battle your body, your mind, your very soul will be used to fuel a ritual to create the next deity, the same ritual that created Cayden Cailean, Iomedae, and Norgorber. Fall and your existence will be erased from the multiverse, so rise and ascend to godhood.
I'll create an obsidian portal page with details about the arena's structure after I've gauged interest. I would prefer not to use battle maps if possible but if people have suggestions for good online campaign editors that they think could handle multiple actors using secret information such as invisibility or traps I'm open to suggestions.
Basic information is that there will be a total of 25 separate planes in 4 rings that you will move through in your pursuit of other combatants. The outer ring is made of 12 planes with passive hazards, things that might be able to kill you but only if you committed suicide or someone used them against you. Once a certain number of participants are eliminated you move to the middle ring. The middle ring is made of 8 planes with more active hazards, things that might be a challenge for lesser mortals but shouldn't be more than a distraction for beings of your caliber. After yet more participants are eliminated here you will move in towards the inner ring. The inner ring will be a measure of your traits and character and will be made of 4 separate planes. The inner ring surrounds the final arena where the last 2 participants will fight.
Each individual plane will be connected to 2 adjacent planes by hidden portals you will have to discover through exploration. Once enough players have been eliminated you will be offered the choice to move on to one of 2 inner planes based on the one you're in when this happens. You won't know where other players are, however you will told the names of participants who are in the same plane you are and alerted when one enters or leaves your plane. You are defeated when you die and aren't defeated until you die and have remained dead for 12 hours. If you defeat another participant you get their gear and detailed information either about one other participant or what's going on in another plane at that moment. You don't have any information about the other participants except their names as you enter the arena, however a name can be used for various divinations such as Legend Lore (which works because at 20th level you're a significant figure no matter how incognito you might try to go) to discover more information about you. For this reason I'd like participants to give me some kind of backstory in addition to their stat sheet.
At most this campaign could handle 12 participants and requires a minimum of 5. I'm open to pretty much any character concept or tactic that uses rules released by paizo. I know the core book and APG well enough, but for anything from another book please give me a link to its entry in the srd.
That's enough info for now. Tell me what you guys think and if anyone's interested in participating.