Metal Gear Solid: Portable Ops, the team-based Metal Gear episode for PSP, will feature a location-specific download system that'll see you downloading special playable characters in different locations across the globe.
Originally thought to be tied into the PSP GPS add-on, Konami has revealed that the GPS receiver (which isn't confirmed for the UK) won't be required for this feature to work.
To get all the characters, you'll have to be a real jet-setter. At special PSP points around the world you'll be able to hook up and download a character - some are from MGS history, some are new - to add to your Portable Ops team. One character will be available in a location in London, for instance, while another might be downloadable in Manchester, Barcelona or Tokyo.
With Portable Ops not out until early next year, Konami is keeping schtum on who these special characters are but we'll continue to hunt down new info.