Running something like this in Dublin???
http://www.comeoutandplay.org/about.php
The festival offers a chance to explore new styles of public games and play. We show how much fun can be had by combining elements like GPS, sidewalks, chalk, smartphones, kickball, SMS, capture the flag, bluetooth, and treasure hunts in a dramatic urban context like New York City.
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and
Players raced through the night in a city-wide game of zombie tag. Friends faced off in life-sized Pong using only their ears to "hear" the ball.[/quote:44dc099b14]
-B.