|Stuff required:||Badges or hats for each team.|
|Preparation:||Optionally, some maps.|
|Time required:||Half an hour to an hour.|
|Place required:||A defined area of city streets.|
|Activities:||Running, sneaking, chasing, teamwork.|
|untested game. Its rules are written, but it hasn't been tested out yet.|
|Attribution-Noncommercial Creative Commons licence. (What does this mean?)|
A security motorcade snakes through the city streets, flanked by police cars with patrol bikes checking the path ahead. Turning a corner, the route is suddenly blocked, and an unseen vehicle rolls out of an alleyway to close the road behind...
Split the players into two equal teams, the Cops and the Robbers, with one player on the Cops team representing a Security Van. The Cops are trying to manoeuvre the van through the city streets, while the Robbers attempt to ambush and trap them.
All the players should wear some form of visible identification (such as a badge, or a hat) - Cops should be distinct from Robbers, and the Van should be distinct from the other Cops.
If you're playing in an environment that not every player is familiar with, give everyone a map of the playing area, with the start zone and a target end zone clearly marked. (Both the start and end zone should have more exits and entrances than the Robbers can cover at once, so that they can't just block every entrance to stop the van from ever reaching its goal.)
The Robbers get a sixty-second head start, to disperse into the streets and start planning their ambush.
The Cops win if they can get the Van to the end zone. The Robbers win if they can pin the Van down in such a way that it clearly cannot reach its destination. (It should be pretty obvious when this has happened.)
Any player (except the Van) may create a "roadblock" by standing still with their arms outstretched. The line made by their arms extends by twenty feet or so in both directions (so you can only block a street, you can't block a large park), and players on the opposing team are not allowed to cross that line.
The use of mobile phones and secret handsignals is encouraged.
2010 protestor variant
Instead of Cops and Robbers, have Protestors and Cops - instead of a Van, a Protest Leader carries a placard (or, if you've got the budget, all protestors have a placard and the leader has a bigger or a differently-coloured one).
The Protestors have to get their leader from the start of their protest route to the end of it (or possibly just remain free for a pre-agreed number of minutes, while remaining within the playing area), and the Cops have to form a kettle around them.