Pathfinder "Hunger Games"

[IKNOWEVERYTHING]

I am trying to organize an epic battle in my group. We just finished a pretty big adventure so I wanted to end on a really fun note. So I decided to try an ultimate battle royale, hunger games style. There will be a stadium 40 miles in diameter and each of my friends will control 4 level 20 characters. They are released in random locations and fight to the death. I am have trouble figuring out how to run a game this style though. Does anyone know a way I can run a session without giving away the PC's locations, and other surprise elements, away?

[My Self]

Separate rooms, then bring them into the same room if they meet each other? It's a bit clunky.

Alternatively, you could rely on your players to not exploit info about each other, or have them declare their actions simultaneously via notes to GM or something.

[CWheezy]

Make it hex based, then have the players move to whatever hex. If they get close draw out the map for battling.

[IKNOWEVERYTHING]

Thanks guys, I'm leaning towards using notes... not really sure though, I still have lots more planning to do!

[Gleaming Terrier]

Find a game with double-blind movement rules. The system doesn't matter, only the process. BattleTech has double blind movement rules, and they're available in several products, including the Tactical Handbook, a staple of Half-Price Books' gaming sections. In that case, CWheezy's suggestion of a hex map works perfectly, since that actually matches up with the maps for BattleTech.