What is CivilAction?
CivilAction is a choose your own adventure type game that is played on your cell phone. It has a twist in that each choice you make is protected by a password. This allows it to play like an alternate reality game. Usually a host team will write a story, and then allow others to play it on their mobile phones.
What do I need to play?
CivilAction has a couple of pieces. The first is a story editor. This is run on a desktop client with Java installed. The second is a mobile phone that is java enabled.
Screenshots
here.