A few people in San Francisco have been working OT to get TagDis ready enough for you to play on your iPhone. Check it:
“In TagDis you can make graffiti, view it through your iPhone camera, stake out a territory and battle your friends over it. You can download it for free from here. If you don’t have an iPhone 3GS You can watch the game unfold online all over the world at http://tagdis.com“
Download this app and you’ll be a king or a mayor or something in no time flat.
Check the video from E23 Games, why not?